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  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">As filed with the Securities and Exchange Commission on May&nbsp;14, 2004.
  
  <P align="right" style="font-size: 10pt">Registration No.&nbsp;333-_______
  
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  <P align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
  
  <DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
  </DIV>
  
  <P align="center" style="font-size: 10pt"><HR size="1" noshade width="32%" align="center">
  
  <P align="center" style="font-size: 18pt"><B>FORM S-8</B>
  
  <DIV align="center" style="font-size: 10pt">REGISTRATION STATEMENT UNDER<BR>
  THE SECURITIES ACT OF 1933</DIV>
  
  <P align="center" style="font-size: 10pt"><HR size="1" noshade width="32%" align="center">
  
  <P align="center" style="font-size: 24pt"><B>CONCORD COMMUNICATIONS, INC.</B>
  
  <DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>
  
  <DIV align="center">
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      <TD align="center" valign="top">Massachusetts</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">04-2710876</TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">(State or other jurisdiction of incorporation or organization)</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">(I.R.S. Employer Identification No.)</TD>
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  </DIV>
  
  <P align="center" style="font-size: 10pt">600 Nickerson Road<BR>
  Marlboro, Massachusetts 01752<BR>
  (508)&nbsp;460-4646<BR>
  (Address of Principal Executive Offices) (Zip Code)
  
  <P align="center" style="font-size: 10pt"><HR size="1" noshade width="32%" align="center">
  
  <P align="center" style="font-size: 10pt">2004 Non-Executive Employee Stock Purchase Plan<BR>
  (Full title of the plan)
  
  <P align="center" style="font-size: 10pt"><HR size="1" noshade width="32%" align="center">
  
  <P align="center" style="font-size: 10pt">John A. Blaeser<BR>
  Chief Executive Officer and President<BR>
  Concord Communications, Inc.<BR>
  600 Nickerson Road<BR>
  Marlboro, Massachusetts 01752<BR>
  (508)&nbsp;460-4646<BR>
  (Name and address including zip code and telephone number,<BR>
  including area code, of agent for service)
  
  <P align="center" style="font-size: 10pt"><HR size="1" noshade width="32%" align="center">
  
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      <TD colspan="3" valign="top" align="center">Copy to:<BR></TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">Douglas A. Batt, Esq.</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">Kevin M. Barry, Esq.</TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">CONCORD COMMUNICATIONS, INC.</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">TESTA, HURWITZ &#038; THIBEAULT, LLP</TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">600 Nickerson Road</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">125 High Street</TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">Marlboro, Massachusetts 01752</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">Boston, Massachusetts 02110</TD>
  </TR>
  <TR valign="bottom">
      <TD align="center" valign="top">(508) 460-4646</TD>
      <TD>&nbsp;</TD>
      <TD align="center" valign="top">(617) 248-7000</TD>
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  <P align="center" style="font-size: 10pt">-2-
  
  <!-- TOC -->
  <A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>
  
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  </TR>
  <TR><TD colspan="9"><A HREF="#000">PART I</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#001">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#002">Item 1. Plan Information.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#003">Item 2. Registrant Information and Employee Plan Annual Information.</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#004">PART II</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#005">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#006">Item 3. Incorporation of Documents by Reference.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#007">Item 4. Description of Securities.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#008">Item 5. Interests of Named Experts and Counsel.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#009">Item 6. Indemnification of Directors and Officers.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#010">Item 7. Exemption From Registration Claimed.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#011">Item 8. Exhibits.</A></TD></TR>
  <TR><TD></TD><TD colspan="8"><A HREF="#012">Item 9. Undertakings.</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#013">SIGNATURES</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#014">Exhibit Index</A></TD></TR>
  <TR><TD colspan="9"><A HREF="b50647ccexv5w1.txt">EX-5.1 OPINION AND CONSENT OF TESTA, HURWITZ ...</A></TD></TR>
  <TR><TD colspan="9"><A HREF="b50647ccexv23w2.txt">EX-23.2 CONSENT OF PRICEWATERHOUSECOOPERS LLP</A></TD></TR>
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  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <P align="center" style="font-size: 10pt">CALCULATION OF REGISTRATION FEE
  
  <P>
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  <HR size="1" noshade color="#000000" style="margin-top: -10px">
  
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      <TD width="57%">&nbsp;</TD>
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      <TD width="1%">&nbsp;</TD>
      <TD width="25%">&nbsp;</TD>
      <TD width="3%">&nbsp;</TD>
      <TD width="24%">&nbsp;</TD>
      <TD width="1%">&nbsp;</TD>
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      <TD width="25%">&nbsp;</TD>
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      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>&nbsp;</B></TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>&nbsp;</B></TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Amount</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Offering</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Aggregate</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD nowrap align="left"><B>Title of Securities</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>to be</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Price Per</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Offering</B></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Registration</B></TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD nowrap align="left"><B>to be Registered</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Registered</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Share</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Price</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center" colspan="3"><B>Fee</B><HR size="1" noshade></TD>
  </TR>
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  <TR valign="bottom" style="background: #eeeeee">
      <TD><DIV style="margin-left:10px; text-indent:-10px">2004 Non-Executive Employee Stock Purchase Plan</DIV></TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right">500,000</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right">$</TD>
      <TD align="right" nowrap>11.50<SUP style="font-size: 80%; vertical-align: top;">(1)</SUP></TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right">$</TD>
      <TD align="right">5,750,000</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right">$</TD>
      <TD align="right">728.53</TD>
      <TD>&nbsp;</TD>
  </TR>
  
  <TR valign="bottom">
      <TD><DIV style="margin-left:10px; text-indent:-10px">Common Stock (Par Value $.01 Per Share)</DIV></TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
  </TR>
  
  <TR valign="bottom" style="background: #eeeeee">
      <TD><DIV style="margin-left:10px; text-indent:-10px"><B>TOTAL:</B></DIV></TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right">500,000</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="right"><B>$</B></TD>
      <TD align="right">728.53</TD>
      <TD>&nbsp;</TD>
  </TR>
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  </DIV>
  
  
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  <TR valign="top">
      <TD width="1%" nowrap align="right">(1)</TD>
      <TD width="3%">&nbsp;</TD>
      <TD width="96%">The price of <B>$</B>11.50 per share, which is the average of the high and low
  prices of the common stock of the registrant reported on the Nasdaq
  National Market on May&nbsp;10, 2004, is set forth solely for purposes of
  calculating the filing fee pursuant to Rule 457(c) and (h)&nbsp;and has been
  used only for those shares without a fixed exercise price.</TD>
  </TR>
  </TABLE>
  
  ..
  
  </DIV>
  
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  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">-3-
  
  <!-- link1 "PART I" -->
  <DIV align="left"><A NAME="000"></A></DIV>
  
  <P align="center" style="font-size: 10pt"><B>PART I</B>
  
  <!-- link1 "INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS" -->
  <DIV align="left"><A NAME="001"></A></DIV>
  
  <P align="center" style="font-size: 10pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
  
  <!-- link2 "Item 1. Plan Information." -->
  <DIV align="left"><A NAME="002"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;1. Plan Information.
  
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The documents containing the information specified in this Item&nbsp;1 will be
  sent or given to employees, directors or others as specified by Rule&nbsp;428(b)(1).
  In accordance with the rules and regulations of the Securities and Exchange
  Commission (the &#147;Commission&#148;) and the instructions to Form S-8, such documents
  are not being filed with the Commission either as part of this registration
  statement or as prospectuses or prospectus supplements pursuant to Rule&nbsp;424.
  
  <!-- link2 "Item 2. Registrant Information and Employee Plan Annual Information." -->
  <DIV align="left"><A NAME="003"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;2. Registrant Information and Employee Plan Annual Information.
  
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The documents containing the information specified in this Item&nbsp;2 will be
  sent or given to employees as specified by Rule&nbsp;428(b)(1). In accordance with
  the rules and regulations of the Commission and the instructions to Form S-8,
  such documents are not being filed with the Commission either as part of this
  registration statement or as prospectuses or prospectus supplements pursuant to
  Rule&nbsp;424.
  
  <!-- link1 "PART II" -->
  <DIV align="left"><A NAME="004"></A></DIV>
  
  <P align="center" style="font-size: 10pt"><B>PART II</B>
  
  <!-- link1 "INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
  <DIV align="left"><A NAME="005"></A></DIV>
  
  <P align="center" style="font-size: 10pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
  
  <!-- link2 "Item 3. Incorporation of Documents by Reference." -->
  <DIV align="left"><A NAME="006"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;3. Incorporation of Documents by Reference.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed with the Commission are incorporated by
  reference in this registration statement:
  
  <P>
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(a)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>The Registrant&#146;s Annual Report on Form 10-K for the fiscal
  year ended December&nbsp;31, 2003 filed pursuant to the Securities
  Exchange Act of 1934 (the &#147;Exchange Act&#148;) that contains audited
  financial statements for the fiscal year ended December&nbsp;31, 2003;</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(b)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>The Registrant&#146;s Quarterly Report on Form 10-Q for the fiscal
  quarter ended March&nbsp;31, 2004, filed pursuant to the Exchange Act;
  and</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(c)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>The section entitled &#147;Description of Registrant&#146;s Securities
  to be Registered,&#148; contained in the Registrant&#146;s Registration
  Statement on Form 8-A, filed on September&nbsp;12, 1997 pursuant to
  Section 12(g) of the Exchange Act.</TD>
  </TR>
  </TABLE>
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed with the Commission by the Registrant
  pursuant to Sections&nbsp;13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
  the filing of a post-effective amendment which indicates that all securities
  offered herein have been sold or which deregisters all securities then
  remaining unsold, shall be deemed to be incorporated by reference in this
  registration statement and to be a part hereof from the date of filing of such
  documents.
  
  </DIV>
  
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  <P><HR noshade><P>
  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">-4-
  
  <!-- link2 "Item 4. Description of Securities." -->
  <DIV align="left"><A NAME="007"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;4. Description of Securities.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
  
  <!-- link2 "Item 5. Interests of Named Experts and Counsel." -->
  <DIV align="left"><A NAME="008"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;5. Interests of Named Experts and Counsel.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
  
  <!-- link2 "Item 6. Indemnification of Directors and Officers." -->
  <DIV align="left"><A NAME="009"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;6. Indemnification of Directors and Officers.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Restated Articles of Organization of the Registrant and the Restated
  By-Laws provide for indemnification of the Registrant&#146;s directors and officers
  unless such indemnification is prohibited by the Massachusetts Business
  Corporation Law. The Massachusetts Business Corporation Law generally permits
  indemnification of the Registrant&#146;s directors and officers for liabilities and
  expenses that they may incur in such capacities, except with respect to any
  matter that the indemnified person shall have been adjudicated in any
  proceeding not to have acted in good faith in the reasonable belief that his or
  her action was in the best interest of the Registrant. Reference is made to
  the Registrant&#146;s corporate charter filed as Exhibit&nbsp;3.02 to the Registrant&#146;s
  registration statement on Form S-1 filed with the Commission on August&nbsp;8, 1997,
  as amended (the &#147;S-1&#148;) and Restated By-Laws filed as Exhibit&nbsp;3.03 to the
  Registrant&#146;s S-1.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to an agreement between Charles River Partnership VII Limited
  Partnership and Mr.&nbsp;Richard M. Burnes, Jr., Charles River Partnership VII has
  agreed to indemnify Mr.&nbsp;Burnes against any liability incurred in his capacity
  as a director of the Registrant.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has entered into indemnification agreements with its
  directors and officers and has obtained directors and officers liability
  insurance for the benefit of its directors and officers.
  
  <!-- link2 "Item 7. Exemption From Registration Claimed." -->
  <DIV align="left"><A NAME="010"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;7. Exemption From Registration Claimed.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
  
  <!-- link2 "Item 8. Exhibits." -->
  <DIV align="left"><A NAME="011"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;8. Exhibits.
  
  <DIV align="center">
  <TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
  <!-- Begin Table Head -->
  <TR valign="bottom">
      <TD width="5%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="80%">&nbsp;</TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD nowrap align="left"><B>Exhibit No.</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center"><B>Description of Exhibit</B><HR size="1" noshade></TD>
  </TR>
  <!-- End Table Head -->
  <!-- Begin Table Body -->
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Restated Articles of Organization (filed as Exhibit&nbsp;3.02 to the
  Registrant&#146;s Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-33227)
  and incorporated herein by reference).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Restated By-Laws (filed as Exhibit&nbsp;3.03 to the Registrant&#146;s
  Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-33227) and
  incorporated herein by reference).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Opinion of Testa, Hurwitz &#038; Thibeault, LLP (filed herewith).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Consent of Testa, Hurwitz &#038; Thibeault, LLP (contained in Exhibit&nbsp;5.1).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP (filed herewith).</TD>
  </TR>
  
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Power of Attorney (included as part of the signature page to this
  Registration Statement).</TD>
  </TR>
  <!-- End Table Body -->
  </TABLE>
  </DIV>
  
  </DIV>
  
  <!-- PAGEBREAK -->
  <P><HR noshade><P>
  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">-5-
  
  
  <!-- link2 "Item 9. Undertakings." -->
  <DIV align="left"><A NAME="012"></A></DIV>
  
  <P align="left" style="font-size: 10pt">Item&nbsp;9. Undertakings.
  
  <P>
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(a)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>The undersigned Registrant hereby undertakes:</TD>
  </TR>
  </TABLE>
  
  <P>
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(1)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>To file, during any period in which offers or
  sales are being made, a post-effective amendment to this
  registration statement:</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(i)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>To include any prospectus required by Section
  10(a)(3) of the Securities Act of 1933;</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(ii)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>To reflect in the prospectus any facts or events
  arising after the effective date of the registration statement
  (or the most recent post-effective amendment thereof) which,
  individually or in the aggregate, represent a fundamental
  change in the information set forth in the registration
  statement. Notwithstanding the foregoing, any increase or
  decrease in volume of securities offered (if the total dollar
  value of securities offered would not exceed that which was
  registered) and any deviation from the low or high end of the
  estimated maximum offering range may be reflected in the form
  of prospectus filed with the Commission pursuant to Rule
  424(b) if, in the aggregate, the changes in volume and price
  represent no more than a 20&nbsp;percent change in the maximum
  aggregate offering price set forth in the &#147;Calculation of
  Registration Fee&#148; table in the registration statement;</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(iii)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>To include any material information with respect
  to the plan of distribution not previously disclosed in the
  registration statement or any material change to such
  information in the registration statement;</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(2)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>That, for the purpose of determining any
  liability under the Securities Act of 1933, each such
  post-effective amendment shall be deemed to be a new
  registration statement relating to the securities offered
  therein, and the offering of such securities at that time
  shall be deemed to be the initial <I>bona fide </I>offering thereof.</TD>
  </TR>
  <TR>
      <TD colspan="5">&nbsp;</TD>
  </TR>
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="9%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(3)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>To remove from registration by means of a
  post-effective amendment any of the securities being
  registered which remain unsold at the termination of the
  offering.</TD>
  </TR>
  </TABLE>
  
  <P>
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(b)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>The undersigned Registrant hereby undertakes that, for
  purposes of determining any liability under the Securities Act of
  1933, each filing of the Registrant&#146;s annual report pursuant to
  Section 13(a) or Section 15(d) of the Securities Exchange Act of
  1934 (and, where applicable, each filing of an employee benefit
  plan&#146;s annual report pursuant to Section 15(d) of the Securities
  Exchange Act of 1934) that is incorporated by reference in the
  registration statement shall be deemed to be a new registration
  statement relating to the securities offered therein, and the
  offering of such securities at that time shall be deemed to be the
  initial <I>bona fide </I>offering thereof.</TD>
  </TR>
  </TABLE>
  
  </DIV>
  
  <!-- PAGEBREAK -->
  <P><HR noshade><P>
  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">-6-
  
  <P>
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
  <TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
      <TD width="6%" style="background: transparent">&nbsp;</TD>
      <TD width="3%" nowrap align="left">(c)</TD>
      <TD width="1%">&nbsp;</TD>
      <TD>Insofar as indemnification for liabilities arising under the
  Securities Act of 1933 may be permitted to directors, officers and
  controlling persons of the Registrant pursuant to the foregoing
  provisions, or otherwise, the Registrant has been advised that in
  the opinion of the Securities and Exchange Commission such
  indemnification is against public policy as expressed in the
  Securities Act of 1933 and is, therefore, unenforceable. In the
  event that a claim for indemnification against such liabilities
  (other than the payment by the Registrant of expenses incurred or
  paid by a director, officer or controlling person of the Registrant
  in the successful defense of any action, suit or proceeding) is
  asserted by such director, officer or controlling person in
  connection with the securities being registered, the Registrant
  will, unless in the opinion of its counsel the matter has been
  settled by controlling precedent, submit to a court of appropriate
  jurisdiction the question whether such indemnification by it is
  against public policy as expressed in the Act and will be governed
  by the final adjudication of such issue.</TD>
  </TR>
  </TABLE>
  
  <P align="center" style="font-size: 10pt"><B>&#091;Remainder of Page Intentionally Left Blank&#093;</B>
  
  </DIV>
  
  <!-- PAGEBREAK -->
  <P><HR noshade><P>
  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <P align="center" style="font-size: 10pt">-7-
  
  <!-- link1 "SIGNATURES" -->
  <DIV align="left"><A NAME="013"></A></DIV>
  
  <P align="center" style="font-size: 10pt"><B>SIGNATURES</B>
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the
  Registrant, Concord Communications, Inc., certifies that it has reasonable
  grounds to believe that it meets all of the requirements for filing on Form S-8
  and has duly caused this registration statement to be signed on its behalf by
  the undersigned, thereunto duly authorized, in the Town of Marlboro,
  Commonwealth of Massachusetts, on this 14th day of May, 2004.
  
  <DIV align="center">
  <TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
  <!-- Begin Table Head -->
  <TR valign="bottom">
      <TD width="48%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="46%">&nbsp;</TD>
  </TR>
  <!-- End Table Head -->
  <!-- Begin Table Body -->
  <TR valign="bottom">
      <TD valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD colspan="3" valign="top" align="left">CONCORD COMMUNICATIONS, INC.</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">By:</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">/s/ John A. Blaeser</TD>
  </TR>
  <TR style="font-size: 1px">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top"><HR size="1" noshade>&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">John A. Blaeser</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Chief Executive Officer and President</TD>
  </TR>
  <!-- End Table Body -->
  </TABLE>
  </DIV>
  
  <P align="center" style="font-size: 10pt"><B>POWER OF ATTORNEY</B>
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We, the undersigned officers and directors of Concord Communications,
  Inc., hereby severally constitute and appoint John A. Blaeser and Melissa H.
  Cruz, and each of them singly, our true and lawful attorneys, with full power
  to them and each of them singly, to sign for us in our names in the capacities
  indicated below, any amendments to this registration statement on Form S-8
  (including post-effective amendments), and to file the same, with all exhibits
  thereto and other documents in connection therewith, with the Securities and
  Exchange Commission, and generally to do all things in our names and on our
  behalf in our capacities as officers and directors to enable Concord
  Communications, Inc., to comply with the provisions of the Securities Act of
  1933, as amended, hereby ratifying and confirming our signatures as they may be
  signed by our said attorneys, or any of them, to said registration statement
  and all amendments thereto.
  
  <P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed by the following persons in the
  capacities and on the dates indicated.
  
  <DIV align="center">
  <TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
  <!-- Begin Table Head -->
  <TR valign="bottom">
      <TD width="30%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="32%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="12%">&nbsp;</TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD nowrap align="left"><B>Signature</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center"><B>Title(s)</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center"><B>Date</B><HR size="1" noshade></TD>
  </TR>
  <!-- End Table Head -->
  <!-- Begin Table Body -->
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John A. Blaeser</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Chief Executive Officer, President and</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Director (Principal Executive Officer)</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">John A. Blaeser</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Melissa H. Cruz</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Executive Vice President, Business Services,</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Chief Financial Officer and Treasurer</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Melissa H. Cruz</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">(Principal Financial and Accounting Officer)</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frederick W. W. Bolander</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Director</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Frederick W. W. Bolander</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Richard M. Burnes, Jr.</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Director</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Richard M. Burnes, Jr.</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Robert M. Wadsworth</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Director</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Robert M. Wadsworth</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Jack M. Cooper</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Director</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">May&nbsp;14, 2004</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><HR size="1" noshade></DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Jack M. Cooper</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <!-- End Table Body -->
  </TABLE>
  </DIV>
  
  <P align="center" style="font-size: 10pt">&nbsp;
  </DIV>
  
  <!-- PAGEBREAK -->
  <P><HR noshade><P>
  <H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <DIV style="font-family: 'Times New Roman',Times,serif">
  
  <!-- link1 "Exhibit Index" -->
  <DIV align="left"><A NAME="014"></A></DIV>
  
  <P align="center" style="font-size: 10pt">Exhibit&nbsp;Index
  
  <DIV align="center">
  <TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
  <!-- Begin Table Head -->
  <TR valign="bottom">
      <TD width="5%">&nbsp;</TD>
      <TD width="2%">&nbsp;</TD>
      <TD width="80%">&nbsp;</TD>
  </TR>
  <TR style="font-size: 8pt" valign="bottom">
      <TD nowrap align="left"><B>Exhibit No.</B><HR size="1" noshade></TD>
      <TD>&nbsp;</TD>
      <TD nowrap align="center"><B>Description of Exhibit</B><HR size="1" noshade></TD>
  </TR>
  <!-- End Table Head -->
  <!-- Begin Table Body -->
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Restated Articles of Organization (filed as Exhibit&nbsp;3.02 to the
  Registrant&#146;s Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-33227)
  and incorporated herein by reference).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Restated By-Laws (filed as Exhibit&nbsp;3.03 to the Registrant&#146;s
  Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-33227) and
  incorporated herein by reference).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Opinion of Testa, Hurwitz &#038; Thibeault, LLP (filed herewith).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Consent of Testa, Hurwitz &#038; Thibeault, LLP (contained in Exhibit&nbsp;5.1).</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP (filed herewith).</TD>
  </TR>
  
  
  
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">&nbsp;</TD>
  </TR>
  <TR valign="bottom">
      <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1</DIV></TD>
      <TD>&nbsp;</TD>
      <TD align="left" valign="top">Power of Attorney (included as part of the signature page to this
  Registration Statement).</TD>
  </TR>
  
  
  
  
  
  <!-- End Table Body -->
  </TABLE>
  </DIV>
  
  <P align="center" style="font-size: 10pt">&nbsp;
  </DIV>
  </BODY>
  </HTML>
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metadata_filer: {"company-data": {"conformed-name": "CONCORD COMMUNICATIONS INC", "cik": "0000915290", "assigned-sic": "7372", "irs-number": "042710876", "state-of-incorporation": "MA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-115512", "film-number": "04807532"}, "business-address": {"street1": "600 NICKERSON RD", "city": "MARLBORO", "state": "MA", "zip": "01752", "phone": "5084604646"}, "mail-address": {"street1": "600 NICKERSON RD", "city": "MARLBORO", "state": "MA", "zip": "01752"}}
text: CONCORD COMMUNICATIONS, INC.
  Table of Contents
  As filed with the Securities and Exchange Commission on May 14, 2004.
  Registration No. 333-_______
  SECURITIES AND EXCHANGE COMMISSION
  WASHINGTON, D.C. 20549
  FORM S-8
  REGISTRATION STATEMENT UNDER
  THE SECURITIES ACT OF 1933
  CONCORD COMMUNICATIONS, INC.
  (Exact name of registrant as specified in its charter)
  Massachusetts
  04-2710876
  (State or other jurisdiction of incorporation or organization)
  (I.R.S. Employer Identification No.)
  600 Nickerson Road
  Marlboro, Massachusetts 01752
  (508) 460-4646
  (Address of Principal Executive Offices) (Zip Code)
  2004 Non-Executive Employee Stock Purchase Plan
  (Full title of the plan)
  John A. Blaeser
  Chief Executive Officer and President
  Concord Communications, Inc.
  600 Nickerson Road
  Marlboro, Massachusetts 01752
  (508) 460-4646
  (Name and address including zip code and telephone number,
  including area code, of agent for service)
  Copy to:
  Douglas A. Batt, Esq.
  Kevin M. Barry, Esq.
  CONCORD COMMUNICATIONS, INC.
  TESTA, HURWITZ & THIBEAULT, LLP
  600 Nickerson Road
  125 High Street
  Marlboro, Massachusetts 01752
  Boston, Massachusetts 02110
  (508) 460-4646
  (617) 248-7000
  -2-
  TABLE OF CONTENTS
  PART I
  INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
  Item 1. Plan Information.
  Item 2. Registrant Information and Employee Plan Annual Information.
  PART II
  INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  Item 3. Incorporation of Documents by Reference.
  Item 4. Description of Securities.
  Item 5. Interests of Named Experts and Counsel.
  Item 6. Indemnification of Directors and Officers.
  Item 7. Exemption From Registration Claimed.
  Item 8. Exhibits.
  Item 9. Undertakings.
  SIGNATURES
  Exhibit Index
  EX-5.1 OPINION AND CONSENT OF TESTA, HURWITZ ...
  EX-23.2 CONSENT OF PRICEWATERHOUSECOOPERS LLP
  Table of Contents
  CALCULATION OF REGISTRATION FEE
  Proposed
  Proposed
  Maximum
  Maximum
  Amount
  Offering
  Aggregate
  Amount of
  Title of Securities
  to be
  Price Per
  Offering
  Registration
  to be Registered
  Registered
  Share
  Price
  Fee
  2004 Non-Executive Employee Stock Purchase Plan
  500,000
  $
  11.50
  (1)
  $
  5,750,000
  $
  728.53
  Common Stock (Par Value $.01 Per Share)
  TOTAL:
  500,000
  $
  728.53
  (1)
  The price of
  $
  11.50 per share, which is the average of the high and low
  prices of the common stock of the registrant reported on the Nasdaq
  National Market on May 10, 2004, is set forth solely for purposes of
  calculating the filing fee pursuant to Rule 457(c) and (h) and has been
  used only for those shares without a fixed exercise price.
  ..
  Table of Contents
  -3-
  PART I
  INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
  Item 1. Plan Information.
  The documents containing the information specified in this Item 1 will be
  sent or given to employees, directors or others as specified by Rule 428(b)(1).
  In accordance with the rules and regulations of the Securities and Exchange
  Commission (the "Commission") and the instructions to Form S-8, such documents
  are not being filed with the Commission either as part of this registration
  statement or as prospectuses or prospectus supplements pursuant to Rule 424.
  Item 2. Registrant Information and Employee Plan Annual Information.
  The documents containing the information specified in this Item 2 will be
  sent or given to employees as specified by Rule 428(b)(1). In accordance with
  the rules and regulations of the Commission and the instructions to Form S-8,
  such documents are not being filed with the Commission either as part of this
  registration statement or as prospectuses or prospectus supplements pursuant to
  Rule 424.
  PART II
  INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  Item 3. Incorporation of Documents by Reference.
  The following documents filed with the Commission are incorporated by
  reference in this registration statement:
  (a)
  The Registrant's Annual Report on Form 10-K for the fiscal
  year ended December 31, 2003 filed pursuant to the Securities
  Exchange Act of 1934 (the "Exchange Act") that contains audited
  financial statements for the fiscal year ended December 31, 2003;
  (b)
  The Registrant's Quarterly Report on Form 10-Q for the fiscal
  quarter ended March 31, 2004, filed pursuant to the Exchange Act;
  and
  (c)
  The section entitled "Description of Registrant's Securities
  to be Registered," contained in the Registrant's Registration
  Statement on Form 8-A, filed on September 12, 1997 pursuant to
  Section 12(g) of the Exchange Act.
  All documents subsequently filed with the Commission by the Registrant
  pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to
  the filing of a post-effective amendment which indicates that all securities
  offered herein have been sold or which deregisters all securities then
  remaining unsold, shall be deemed to be incorporated by reference in this
  registration statement and to be a part hereof from the date of filing of such
  documents.
  Table of Contents
  -4-
  Item 4. Description of Securities.
  Not applicable.
  Item 5. Interests of Named Experts and Counsel.
  Not applicable.
  Item 6. Indemnification of Directors and Officers.
  The Restated Articles of Organization of the Registrant and the Restated
  By-Laws provide for indemnification of the Registrant's directors and officers
  unless such indemnification is prohibited by the Massachusetts Business
  Corporation Law. The Massachusetts Business Corporation Law generally permits
  indemnification of the Registrant's directors and officers for liabilities and
  expenses that they may incur in such capacities, except with respect to any
  matter that the indemnified person shall have been adjudicated in any
  proceeding not to have acted in good faith in the reasonable belief that his or
  her action was in the best interest of the Registrant. Reference is made to
  the Registrant's corporate charter filed as Exhibit 3.02 to the Registrant's
  registration statement on Form S-1 filed with the Commission on August 8, 1997,
  as amended (the "S-1") and Restated By-Laws filed as Exhibit 3.03 to the
  Registrant's S-1.
  Pursuant to an agreement between Charles River Partnership VII Limited
  Partnership and Mr. Richard M. Burnes, Jr., Charles River Partnership VII has
  agreed to indemnify Mr. Burnes against any liability incurred in his capacity
  as a director of the Registrant.
  The Registrant has entered into indemnification agreements with its
  directors and officers and has obtained directors and officers liability
  insurance for the benefit of its directors and officers.
  Item 7. Exemption From Registration Claimed.
  Not applicable.
  Item 8. Exhibits.
  Exhibit No.
  Description of Exhibit
  4.1
  Restated Articles of Organization (filed as Exhibit 3.02 to the
  Registrant's Registration Statement on Form S-1 (File No. 333-33227)
  and incorporated herein by reference).
  4.2
  Restated By-Laws (filed as Exhibit 3.03 to the Registrant's
  Registration Statement on Form S-1 (File No. 333-33227) and
  incorporated herein by reference).
  5.1
  Opinion of Testa, Hurwitz & Thibeault, LLP (filed herewith).
  23.1
  Consent of Testa, Hurwitz & Thibeault, LLP (contained in Exhibit 5.1).
  23.2
  Consent of PricewaterhouseCoopers LLP (filed herewith).
  24.1
  Power of Attorney (included as part of the signature page to this
  Registration Statement).
  Table of Contents
  -5-
  Item 9. Undertakings.
  (a)
  The undersigned Registrant hereby undertakes:
  (1)
  To file, during any period in which offers or
  sales are being made, a post-effective amendment to this
  registration statement:
  (i)
  To include any prospectus required by Section
  10(a)(3) of the Securities Act of 1933;
  (ii)
  To reflect in the prospectus any facts or events
  arising after the effective date of the registration statement
  (or the most recent post-effective amendment thereof) which,
  individually or in the aggregate, represent a fundamental
  change in the information set forth in the registration
  statement. Notwithstanding the foregoing, any increase or
  decrease in volume of securities offered (if the total dollar
  value of securities offered would not exceed that which was
  registered) and any deviation from the low or high end of the
  estimated maximum offering range may be reflected in the form
  of prospectus filed with the Commission pursuant to Rule
  424(b) if, in the aggregate, the changes in volume and price
  represent no more than a 20 percent change in the maximum
  aggregate offering price set forth in the "Calculation of
  Registration Fee" table in the registration statement;
  (iii)
  To include any material information with respect
  to the plan of distribution not previously disclosed in the
  registration statement or any material change to such
  information in the registration statement;
  (2)
  That, for the purpose of determining any
  liability under the Securities Act of 1933, each such
  post-effective amendment shall be deemed to be a new
  registration statement relating to the securities offered
  therein, and the offering of such securities at that time
  shall be deemed to be the initial
  bona fide
  offering thereof.
  (3)
  To remove from registration by means of a
  post-effective amendment any of the securities being
  registered which remain unsold at the termination of the
  offering.
  (b)
  The undersigned Registrant hereby undertakes that, for
  purposes of determining any liability under the Securities Act of
  1933, each filing of the Registrant's annual report pursuant to
  Section 13(a) or Section 15(d) of the Securities Exchange Act of
  1934 (and, where applicable, each filing of an employee benefit
  plan's annual report pursuant to Section 15(d) of the Securities
  Exchange Act of 1934) that is incorporated by reference in the
  registration statement shall be deemed to be a new registration
  statement relating to the securities offered therein, and the
  offering of such securities at that time shall be deemed to be the
  initial
  bona fide
  offering thereof.
  Table of Contents
  -6-
  (c)
  Insofar as indemnification for liabilities arising under the
  Securities Act of 1933 may be permitted to directors, officers and
  controlling persons of the Registrant pursuant to the foregoing
  provisions, or otherwise, the Registrant has been advised that in
  the opinion of the Securities and Exchange Commission such
  indemnification is against public policy as expressed in the
  Securities Act of 1933 and is, therefore, unenforceable. In the
  event that a claim for indemnification against such liabilities
  (other than the payment by the Registrant of expenses incurred or
  paid by a director, officer or controlling person of the Registrant
  in the successful defense of any action, suit or proceeding) is
  asserted by such director, officer or controlling person in
  connection with the securities being registered, the Registrant
  will, unless in the opinion of its counsel the matter has been
  settled by controlling precedent, submit to a court of appropriate
  jurisdiction the question whether such indemnification by it is
  against public policy as expressed in the Act and will be governed
  by the final adjudication of such issue.
  [Remainder of Page Intentionally Left Blank]
  Table of Contents
  -7-
  SIGNATURES
  Pursuant to the requirements of the Securities Act of 1933, the
  Registrant, Concord Communications, Inc., certifies that it has reasonable
  grounds to believe that it meets all of the requirements for filing on Form S-8
  and has duly caused this registration statement to be signed on its behalf by
  the undersigned, thereunto duly authorized, in the Town of Marlboro,
  Commonwealth of Massachusetts, on this 14th day of May, 2004.
  CONCORD COMMUNICATIONS, INC.
  By:
  /s/ John A. Blaeser
  John A. Blaeser
  Chief Executive Officer and President
  POWER OF ATTORNEY
  We, the undersigned officers and directors of Concord Communications,
  Inc., hereby severally constitute and appoint John A. Blaeser and Melissa H.
  Cruz, and each of them singly, our true and lawful attorneys, with full power
  to them and each of them singly, to sign for us in our names in the capacities
  indicated below, any amendments to this registration statement on Form S-8
  (including post-effective amendments), and to file the same, with all exhibits
  thereto and other documents in connection therewith, with the Securities and
  Exchange Commission, and generally to do all things in our names and on our
  behalf in our capacities as officers and directors to enable Concord
  Communications, Inc., to comply with the provisions of the Securities Act of
  1933, as amended, hereby ratifying and confirming our signatures as they may be
  signed by our said attorneys, or any of them, to said registration statement
  and all amendments thereto.
  Pursuant to the requirements of the Securities Act of 1933, this
  registration statement has been signed by the following persons in the
  capacities and on the dates indicated.
  Signature
  Title(s)
  Date
  /s/ John A. Blaeser
  Chief Executive Officer, President and
  May 14, 2004
  Director (Principal Executive Officer)
  John A. Blaeser
  /s/ Melissa H. Cruz
  Executive Vice President, Business Services,
  May 14, 2004
  Chief Financial Officer and Treasurer
  Melissa H. Cruz
  (Principal Financial and Accounting Officer)
  /s/ Frederick W. W. Bolander
  Director
  May 14, 2004
  Frederick W. W. Bolander
  /s/ Richard M. Burnes, Jr.
  Director
  May 14, 2004
  Richard M. Burnes, Jr.
  /s/ Robert M. Wadsworth
  Director
  May 14, 2004
  Robert M. Wadsworth
  /s/ Jack M. Cooper
  Director
  May 14, 2004
  Jack M. Cooper
  Table of Contents
  Exhibit Index
  Exhibit No.
  Description of Exhibit
  4.1
  Restated Articles of Organization (filed as Exhibit 3.02 to the
  Registrant's Registration Statement on Form S-1 (File No. 333-33227)
  and incorporated herein by reference).
  4.2
  Restated By-Laws (filed as Exhibit 3.03 to the Registrant's
  Registration Statement on Form S-1 (File No. 333-33227) and
  incorporated herein by reference).
  5.1
  Opinion of Testa, Hurwitz & Thibeault, LLP (filed herewith).
  23.1
  Consent of Testa, Hurwitz & Thibeault, LLP (contained in Exhibit 5.1).
  23.2
  Consent of PricewaterhouseCoopers LLP (filed herewith).
  24.1
  Power of Attorney (included as part of the signature page to this
  Registration Statement).