Document:

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                                                            Exhibit 10.5
                                                            ------------

                FIRST AMENDMENT TO PLEDGE AND SECURITY AGREEMENT

          THIS FIRST AMENDMENT TO PLEDGE AND SECURITY AGREEMENT (the
"Amendment"), dated as of July 6, 2001, is made and entered into by and between
Webb Interactive Services, Inc. (the "Pledgor") and France Telecom Technologies
Investments f/k/a France Telecom Technologies (the "Pledgee").

                                    Recitals
                                    --------

          A.  The Pledgor and Pledgee are parties to a Pledge and Security
Agreement dated as of May 2, 2001 (the "Pledge"), which secures the Pledgor's
guaranty of all of the payment and performance covenants, agreements and
obligations contained in the Note Purchase Agreement dated as of May 2, 2001, as
amended by the First Amendment to Note Purchase Agreement of even date herewith
(the "Purchase Agreement") and all other Transaction Documents (as defined in
the Purchase Agreement) pursuant to the Corporate Guaranty (the "Guaranty")
dated as of May 2, 2001 from the Pledgor to and in favor of the Pledgee.

          B.  The Pledgor, Jabber, Inc. f/k/a Jabber.com, Inc. (the "Company")
and the Investor entered into the Purchase Agreement in connection with the
Investor's proposed investment in the Company and the Investor's acquisition of
certain capital stock of the Company as outlined in the Series B Convertible
Preferred Stock Summary of Terms (the "Summary of Terms").

          C.  The Pledgor and the Pledgee desire to amend the Pledge as set
forth herein, and to ratify and confirm the Pledge as so amended.

                                   Agreement
                                   ---------

          NOW, THEREFORE, in consideration of the premises and the mutual
agreements, representations and warranties herein set forth and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

          1.  Defined Terms.  Capitalized terms used but not defined in this
              -------------
Amendment shall have the meanings given thereto in the Pledge.

          2.  Agreements and Amendments to the Pledge.
              ---------------------------------------

              a.  The Company, Webb and the Investor confirm and agree that, for
the purposes of clarification and the avoidance of doubt, the defined term
"Transaction Document" in the Pledge includes (i) the Purchase Agreement, (ii)
the Note, (iii) the Security Agreement, (iv) the Pledge Agreement, (v) the
Guaranty, (vi) the Stock Purchase Agreement dated as of
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July 6, 2001 among the Company, Webb and the Investor, (vii) the Stockholders
Agreement dated as of July 6, 2001 among the Company, the Investor and the
parties set forth on Schedule A thereto, (viii) the Series A-1 and Series B
Convertible Preferred Stock Investor Rights Agreement dated as of July 6, 2001
among the Company and the parties set forth on Exhibit A thereto, (ix) the
Amended Certificate of Designation of Series A, (x) the Amended Certificate of
Designation of Series B, (xi) the Amended Certificate of Designation of Series C
and (xii) all other agreements, documents or instruments executed and delivered
by or on behalf of the Company or Webb in connection with the transactions
contemplated by any of the foregoing. The parties acknowledge that the Company
has changed its corporate name to Jabber, Inc. and that the Investor has changed
its corporate name to France Telecom Technologies Investments.

          b.   The Pledge is hereby amended by deleting Schedule 1 thereto and
substituting therefor the revised Schedule 1 attached hereto as Annex 1.

          c.   The Pledge is hereby amended by deleting the third paragraph of
Section 4 therefrom and substituting the following therefor:

               "The Pledgee shall be entitled to exercise any and all voting and
               other consensual rights pertaining to the Pledged Shares or any
               part thereof for any purpose in its sole discretion; provided,
                                                                    --------
               however, unless an Event of Default has occurred, Pledgee agrees
               -------
               that it will not, without the Pledgor's prior written consent,
               vote any of the Pledged Stock: (i) in favor of any merger, other
               corporate reorganization, sale of control or any transaction in
               which all or substantially all of the assets of the Company are
               sold or (ii) to amend or waive any provision of the Company's
               certificate of incorporation or bylaws except as contemplated by
               the Stock Purchase Agreement and (iii) shall vote the Shares for
               election to the Board of Directors of the Company of the
               Pledgor's nominees, two members of Board of Directors being
               designated by the Pledgor and the remaining members (other than
               the one selected by the Series B Shareholders) of the Board of
               Directors being designated by the Pledgor following consultation
               with and good faith consideration of the stated interests of the
               Pledgee, it being understood that those two nominees are intended
               to be good, capable and independent persons."

          d.   The Pledge is hereby amended by deleting clause (b) from Section
7 and re-designating clause (c) therein as clause (b) and re-designating clause
(d) therein as clause (c).

          e.   The Pledge is hereby amended by deleting Section 11 therefrom and
substituting the following therefor:

                         "11.  Termination.  Notwithstanding the payment in full
                               -----------
               of the principal and accrued interest under the Note, this
               Agreement may not be cancelled and shall not be terminated, and
               this Agreement remains in full force and effect, until the later
               of (A) the payment in full of the principal and interest on the
               Note, and (B) the expiration of the term of the

                                      -2-
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               Guarantor's obligations with respect to the representations,
               warranties, covenants and indemnifications set forth in Section 6
               of the Stock Purchase Agreement (the "Section 6 Term"), or, if
               there are any outstanding demands, claims, causes of action or
               assessments which have been asserted against the Guarantor prior
               to the termination of the Section 6 Term, following resolution of
               all such demands, claims, causes of action or assessments."

     3.   Representations and Warranties.
          ------------------------------

          a.   The Pledgor hereby remakes and restates each of the
representations and warranties of such party in the Pledge effective as of the
date of this Amendment, which representations and warranties are incorporated
herein by reference as if fully set forth.

          b.   The Pledgor hereby further represents and warrants that this
Amendment has been duly authorized, executed and delivered by the Pledgor, and
that this Amendment is binding upon and enforceable against the Pledgor in
accordance with its terms.

     4.   Miscellaneous Provisions.
          ------------------------

          a.   This Amendment is an amendment to the Pledge, and the Pledge as
amended by this Amendment is hereby ratified, approved and confirmed in each and
every respect, and the parties hereto agree that the Pledge remains in full
force and effect in accordance with its terms. The Pledgor agrees and confirms
that the Pledge, as amended hereby, secures the payment of principal and
interest on the Note and the Pledgor's complete performance of the covenants,
agreements and obligations (monetary, performance or otherwise) contained in
Section 6 of the Stock Purchase Agreement. Nothing contained herein shall be
construed to deem paid the Note or to release or terminate, in whole or in part,
the Security Agreement, this Pledge or the Guaranty or any lien, pledge or
security interest granted pursuant thereto. All references to the Pledge in each
of the Transaction Documents and in any other document or instrument shall
hereafter be deemed to refer to the Pledge as amended hereby.

          b.   This Amendment shall be governed by and construed in accordance
with the laws of the State of Colorado, excluding that body of law relating to
conflict of laws.

          c.   This Amendment may be executed in any number of counterparts and
by different parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement.

          d.   The execution, delivery and effectiveness of this Amendment shall
not operate or be deemed to operate as a waiver of any rights, powers or
remedies of the Investor under the Pledge or any other Transaction Document or
constitute a waiver of any provision thereof.

                                      -3-
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          e.  This Amendment shall be binding upon and inure to the benefit of
the Pledgor and the Pledgee, and their respective successors and assigns
permitted by the Pledge.

                [ Remainder of this page intentionally blank ]

                                      -4-
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed by their respective officers thereunto duly authorized as of the
date first above written.

                                     PLEDGOR:

                                     WEBB INTERACTIVE SERVICES, INC.

                                     By: /s/ Gwenael Hagan
                                         ---------------------------------
                                     Name: Gwenael Hagan
                                     Title: Senior Vice President, Corporate
                                            Development

                                     PLEDGEE:

                                     FRANCE TELECOM TECHNOLOGIES INVESTISSEMENTS

                                     By: /s/ Eric Cozanet
                                         ---------------------------------
                                     Name: Eric Cozanet
                                     Title: Chief Executive Officer

                                      -5-
<PAGE>

                                    Annex 1
                                    -------

                      Revised Schedule 1 attached hereto

                                      -6-<PAGE>

                                                            EXHIBIT 10.6
                                                            ------------

              RATIFICATION OF AND AMENDMENT TO CORPORATE GUARANTY

          THIS RATIFICATION OF AND AMENDMENT TO CORPORATE GUARANTY (the
"Amendment"), dated as of July __, 2001, is made and entered into by and between
Webb Interactive Services, Inc. (the "Guarantor") and France Telecom
Technologies Investissements f/k/a France Telecom Technologies (the "Investor").

                                    Recitals
                                    --------

          A.  The Guarantor and the Investor are parties to a Corporate Guaranty
dated as of May 2, 2001 (the "Guaranty"), which guaranties the payment and
performance by Jabber, Inc. f/k/a Jabber.com, Inc. (the "Company") of all of its
covenants, agreements and obligations contained in the Note Purchase Agreement
dated as of May 2, 2001, as amended by the First Amendment to Note Purchase
Agreement of even date herewith (the "Purchase Agreement") and all other
Transaction Documents (as defined in the Purchase Agreement).

          B.  The Guarantor, the Company and the Investor entered into the
Purchase Agreement in connection with the Investor's proposed investment in the
Company and the Investor's acquisition of certain capital stock of the Company
as outlined in the Series B Convertible Preferred Stock Summary of Terms (the
"Summary of Terms").

          C.  The Guarantor and the Investor desire to amend the Guaranty as set
forth herein, and to ratify and confirm the Guaranty as so amended.

                                   Agreement
                                   ---------

          NOW, THEREFORE, in consideration of the premises and the mutual
agreements, representations and warranties herein set forth and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

          1.  Defined Terms.  Capitalized terms used but not defined in this
              -------------
Amendment shall have the meanings given thereto in the Guaranty.

          2.  Agreements and Amendments to the Guaranty.
              -----------------------------------------

              a.  The Company, Webb and the Investor confirm and agree that, for
the purposes of clarification and the avoidance of doubt, the defined term
"Transaction Document" in the Purchase Agreement includes (i) the Purchase
Agreement, (ii) the Note, (iii) the Security Agreement, (iv) the Pledge
Agreement, (v) the Guaranty, (vi) the Stock Purchase Agreement dated as of July
6, 2001 among the Company, Webb and the Investor, (vii) the Stockholders
Agreement dated as of July 6, 2001 among the Company, the Investor and the
parties set forth on Schedule A thereto, (viii) the Series A-1 and Series B
Convertible Preferred Stock Investor
<PAGE>

Rights Agreement dated as of July 6, 2001 among the Company and the parties set
forth on Exhibit A thereto, (ix) the Amended Certificate of Designation of
Series A, (x) the Amended Certificate of Designation of Series B, (xi) the
Amended Certificate of Designation of Series C and (xii) all other agreements,
documents or instruments executed and delivered by or on behalf of the Company
or Webb in connection with the transactions contemplated by any of the
foregoing. The parties acknowledge that the Company has changed its corporate
name to Jabber, Inc. and that the Investor has changed its corporate name to
France Telecom Technologies Investments.

          b.   The Guarantor agrees that it shall, and it shall cause the
Company to, comply with each of its respective agreements, covenants and
obligations contained in each of the Transaction Documents.

          c.   The Guaranty is hereby amended by deleting Section 1 and
substituting the following therefor:

               "1)  The Corporate Guarantor hereby absolutely and
               unconditionally guarantees to FTT payment and performance of the
               Obligor of its obligations under the Note and the full payment
               and performance by the Guarantor of all of its covenants,
               agreements and obligations (monetary, performance or otherwise)
               under each Transaction Document to which it is a party."

          d.   The Guaranty is hereby amended by adding a new Section 9 thereto
as follows:

                         "9)  Notwithstanding the payment in full of the
               principal and accrued interest under the Note, this Corporate
               Guaranty may not be cancelled and shall not be terminated, and
               this Corporate Guaranty remains in full force and effect, until
               the later of (A) the payment in full of the principal and
               interest on the Note, and (B) the expiration of the term of the
               Guarantor's obligations with respect to the representations,
               warranties, covenants and indemnifications set forth in Section 6
               of the Stock Purchase Agreement (the "Section 6 Term"), or, if
               there are any outstanding demands, claims, causes of action or
               assessments which have been asserted against the Guarantor prior
               to the termination of the Section 6 Term, following resolution of
               all such demands, claims, causes of action or assessments."

      3.  Representations and Warranties.
          ------------------------------

          a.   The Guarantor hereby remakes and restates each of the
representations and warranties in the Guaranty effective as of the date of this
Amendment, which representations and warranties are incorporated herein by
reference as if fully set forth.

                                      -2-
<PAGE>

          b.  The Guarantor hereby further represents and warrants that this
Amendment has been duly authorized, executed and delivered by the Guarantor, and
that this Amendment is binding upon and enforceable against the Guarantor in
accordance with its terms.

4.  Miscellaneous Provisions.
    ------------------------

          a.  This Amendment is an amendment to and ratification of the
Guaranty, and the Guaranty as amended by this Amendment is hereby
unconditionally and irrevocably ratified, approved and confirmed in each and
every respect, and the parties hereto agree that the Guaranty remains in full
force and effect in accordance with its terms.  Nothing contained herein shall
be construed to deem paid the Note or to release or terminate, in whole or in
part, the Security Agreement, the Pledge or the Guaranty or any lien, pledge or
security interest granted pursuant thereto.  All references to the Guaranty in
each of the Transaction Documents and in any other document or instrument shall
hereafter be deemed to refer to the Guaranty as amended hereby.

          b.  This Amendment shall be governed by and construed in accordance
with the laws of the State of Colorado, excluding that body of law relating to
conflict of laws.

          c.  This Amendment may be executed in any number of counterparts and
by different parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement.

          d.  The execution, delivery and effectiveness of this Amendment shall
not operate or be deemed to operate as a waiver of any rights, powers or
remedies of the Investor under the Guaranty or any other Transaction Document or
constitute a waiver of any provision thereof.

          e.  This Amendment shall be binding upon and inure to the benefit of
the Guarantor and the Investor, and their respective successors and assigns
permitted by the Guaranty.

                 [ Remainder of this page intentionally blank ]

                                      -3-
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed by their respective officers thereunto duly authorized as of the
date first above written.

                                    PLEDGOR:

                                    WEBB INTERACTIVE SERVICES, INC.

                                    By: /s/ Gwenael Hagan
                                        -----------------
                                    Name: Gwenael Hagan
                                    Title: Senior Vice President,
                                           Corporate Development

                                    PLEDGEE:

                                    FRANCE TELECOM TECHNOLOGIES INVESTISSEMENTS

                                    By: /s/ Eric Cozanet
                                        ----------------
                                    Name: Eric Cozanet
                                    Title: Chief Executive Officer

                                      -4-

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