Document:

THE DESCARTES SYSTEMS GROUP INC.
                       STOCK OPTION PLAN OPTION AGREEMENT

To:      Arthur Mesher

Date:    MARCH 7, 2005

Re:      The Descartes Systems Group Inc. Stock Option Plan

Attached hereto is a copy of The Descartes Systems Group Inc. Stock Option Plan
(the "Plan") that has been approved by the Board of Directors of The Descartes
Systems Group Inc. (the "Company").

This is to advise you that you are entitled to participate in the Plan and have
been granted an option to purchase 679,450 common shares (the "Shares") in the
capital of the Company.

         1. The exercise price of the option is Cdn. $2.46 per share.

         2. Your option may be exercised in whole or in part, subject to the
         vesting schedule described in Section 3, at any time or from time to
         time, up to and including, but not after, MARCH 7, 2012 on which date
         your option, unless terminated earlier on the basis set forth in the
         following sentence or the Plan, shall expire. Subject to the foregoing,
         in the event of the termination of your employment with the Company or
         its Affiliates (as defined in the Plan) other than for cause or as a
         result of resignation, that portion of the option that has not vested
         on the date you receive such notice of termination (the "Notice Date")
         shall expire and terminate on the Notice Date, and that portion of the
         option that has vested on the Notice Date shall expire and terminate on
         the date six months after the Notice Date.

         3. Subject to Sections 2 and 6, your option shall vest in accordance
         with the following vesting schedule:

                      -------------------------- ---------------------
                      VESTING DATE               NO. OF OPTIONS FROM
                                                 GRANT VESTING ON THIS
                                                 VESTING DATE
                      -------------------------- ---------------------
                      June 7, 2005               33,972
                      -------------------------- ---------------------
                      September 7, 2005          33,972
                      -------------------------- ---------------------
                      December 7, 2005           33,972
                      -------------------------- ---------------------
                      March 7, 2006              33,972
                      -------------------------- ---------------------
                      June 7, 2006               33,972
                      -------------------------- ---------------------
                      September 7, 2006          33,972
                      -------------------------- ---------------------
                      December 7, 2006           33,972
                      -------------------------- ---------------------
                      March 7, 2007              33,972
                      -------------------------- ---------------------
                      June 7, 2007               33,972
                      -------------------------- ---------------------
                      September 7, 2007          33,972
                      -------------------------- ---------------------
                      December 7, 2007           33,972
                      -------------------------- ---------------------
                      March 7, 2008              33,972
                      -------------------------- ---------------------
                      June 7, 2008               33,972
                      -------------------------- ---------------------
                      September 7, 2008          33,972
                      -------------------------- ---------------------
                      December 7, 2008           33,972
                      -------------------------- ---------------------
                      March 7, 2009              33,972
                      -------------------------- ---------------------
                      June 7, 2009               33,972
                      -------------------------- ---------------------
                      September 7, 2009          33,972
                      -------------------------- ---------------------
                      December 7, 2009           33,972
                      -------------------------- ---------------------
                      March 7, 2010              33,982
                      -------------------------- ---------------------

         4. The terms and conditions of the Plan are hereby deemed to be
         incorporated into and to form part hereof. If there is a conflict
         between any provision of this Agreement and any provision of the Plan,
         the relevant provision of this Agreement shall prevail.

         5. No share certificates representing the Shares shall be delivered
         until payment of the exercise price for the Shares has been made in
         full.

         6. Notwithstanding any other provision of the Plan or this Agreement,
         if a Change of Control occurs, then all options granted pursuant hereto
         that remain unvested as of the date of any such termination shall
         immediately vest on such date.
<PAGE>

         A "Change in Control" shall be deemed to have occurred if (i) any
         person (as defined in the Securities Act (Ontario)) becomes, after the
         date hereof, the owner or "beneficial owner" (as defined in the
         Securities Act (Ontario)), directly or indirectly, of securities of the
         Company representing 50% or more of the combined voting power of the
         Company's then outstanding securities; (ii) during any two year period,
         individuals who at the beginning of such period constitute the Board,
         including for this purpose any additional director whose election was
         approved by a vote of a majority of the directors then in office or who
         were appointed by the directors then in office, cease for any reason to
         constitute a majority thereof; (iii) the Company consummates a merger,
         amalgamation, arrangement or consolidation of the Company or other
         similar transaction with or into another corporation (a
         "Reorganization"), the result of which is that the shareholders of the
         Company at the time of the execution of the agreement relating to the
         Reorganization own less than 50% of the total equity of the corporation
         surviving or resulting from the Reorganization or of a corporation
         owning, directly or indirectly, 100% of the total equity of such
         surviving or resulting corporation; or (iv) the sale in one or a series
         of transactions of all or substantially all of the assets of the
         Company.

         7. Notwithstanding any other provision of the Plan or this Agreement,
         if you are terminated without "Cause" (as defined in your Employment
         Agreement), then any portion of your option that is unvested at the
         date of notice of such termination shall immediately and automatically
         vest as of the date of such notice of termination; provided, however,
         that if the portion of your option that is otherwise unvested as of the
         date of notice of termination entitles you to purchase 257,500 Shares
         or more, then only that portion of your option that is unvested as of
         the date of notice of termination and entitles you to purchase 257,500
         Shares shall immediately and automatically vest pursuant to this
         paragraph as of the date of such notice of termination.

If you desire to accept this option, please so indicate in the space below.
Please note that acceptance does not constitute an exercise of the option.
Options must be exercised in accordance with the terms and conditions of the
Plan by completing and submitting a subscription substantially in the form of
Schedule A annexed to the Plan, accompanied by payment in full of the exercise
price of the option.

                                       THE DESCARTES SYSTEMS GROUP INC.

                                       By: /s/ J. Scott Pagan
                                          -------------------------------------
                                          General Counsel and Corporate
                                          Secretary

I hereby accept the above option and agree to
the terms and the conditions set forth above
including the terms and conditions of the Plan.

/s/ Arthur Mesher
------------------------------------
ARTHUR MESHERTHE DESCARTES SYSTEMS GROUP INC.
                       STOCK OPTION PLAN OPTION AGREEMENT

To:      Brandon Nussey

Date:    MARCH 12, 2004

Re:      The Descartes Systems Group Inc. Stock Option Plan

Attached hereto is a copy of The Descartes Systems Group Inc. Stock Option Plan
(the "Plan") that has been approved by the Board of Directors of The Descartes
Systems Group Inc. (the "Company").

This is to advise you that you are entitled to participate in the Plan and have
been granted an option to purchase 100,000 common shares (the "Shares") in the
capital of the Company.

         1. The exercise price of the option is Cdn. $3.18 per share.

         2. Your option may be exercised in whole or in part, subject to the
         vesting schedule described in Section 3, at any time or from time to
         time, up to and including, but not after, MARCH 12, 2011 on which date
         your option, unless terminated earlier on the basis set forth in the
         following sentence or the Plan, shall expire. Subject to the foregoing,
         in the event of the termination of your employment with the Company or
         its Affiliates (as defined in the Plan) other than for cause or as a
         result of resignation, that portion of the option that has not vested
         on the date you receive such notice of termination (the "Notice Date")
         shall expire and terminate on the Notice Date, and that portion of the
         option that has vested on the Notice Date shall expire and terminate on
         the date six months after the Notice Date.

         3. Subject to Section 2, your option shall vest in accordance with the
         following vesting schedule:

                 --------------------- ---------------------
                     VESTING DATE      NO. OF OPTIONS FROM
                                         GRANT VESTING ON
                                            THIS DATE
                 --------------------- ---------------------
                 March 12, 2005        6,250
                 --------------------- ---------------------
                 June 12, 2005         6,250
                 --------------------- ---------------------
                 September 12, 2005    6,250
                 --------------------- ---------------------
                 December 12, 2005     6,250
                 --------------------- ---------------------
                 March 12, 2006        6,250
                 --------------------- ---------------------
                 June 12, 2006         6,250
                 --------------------- ---------------------
                 September 12, 2006    6,250
                 --------------------- ---------------------
                 December 12, 2006     6,250
                 --------------------- ---------------------
                 March 12, 2007        6,250
                 --------------------- ---------------------
                 June 12, 2007         6,250
                 --------------------- ---------------------
                 September 12, 2007    6,250
                 --------------------- ---------------------
                 December 12, 2007     6,250
                 --------------------- ---------------------
                 March 12, 2008        6,250
                 --------------------- ---------------------
                 June 12, 2008         6,250
                 --------------------- ---------------------
                 September 12, 2008    6,250
                 --------------------- ---------------------
                 December 12, 2008     6,250
                 --------------------- ---------------------

         4. The terms and conditions of the Plan are hereby deemed to be
         incorporated into and to form part hereof. If there is a conflict
         between any provision of this Agreement and any provision of the Plan,
         the relevant provision of this Agreement shall prevail.

         5. No share certificates representing the Shares shall be delivered
         until payment of the exercise price for the Shares has been made in
         full.

         6. Notwithstanding any other provision of the Plan or this Agreement,
         if a Change of Control occurs AND your employment is terminated without
         Cause (as defined in your Employment Agreement) within a period of six
         (6) months after the effective date of the Change of Control, then all
         options granted pursuant hereto that remain unvested as of the date of
         any such termination shall immediately vest on such date.
<PAGE>

         A "Change in Control" shall be deemed to have occurred if (i) any
         person (as defined in the Securities Act (Ontario)) becomes, after the
         date hereof, the owner or "beneficial owner" (as defined in the
         Securities Act (Ontario)), directly or indirectly, of securities of the
         Company representing 50% or more of the combined voting power of the
         Company's then outstanding securities; (ii) during any two year period,
         individuals who at the beginning of such period constitute the Board,
         including for this purpose any additional director whose election was
         approved by a vote of at least two-thirds of the directors then in
         office who were directors at the beginning of the period, cease for any
         reason to constitute a majority thereof; (iii) the Company consummates
         a merger, amalgamation, arrangement or consolidation of the Company or
         other similar transaction with or into another corporation (a
         "Reorganization"), the result of which is that the shareholders of the
         Company at the time of the execution of the agreement relating to the
         Reorganization own less than 50% of the total equity of the corporation
         surviving or resulting from the Reorganization or of a corporation
         owning, directly or indirectly, 100% of the total equity of such
         surviving or resulting corporation; or (iv) the sale in one or a series
         of transactions of all or substantially all of the assets of the
         Company.

If you desire to accept this option, please so indicate in the space below.
Please note that acceptance does not constitute an exercise of the option.
Options must be exercised in accordance with the terms and conditions of the
Plan by completing and submitting a subscription substantially in the form of
Schedule A annexed to the Plan, accompanied by payment in full of the exercise
price of the option.

                                       THE DESCARTES SYSTEMS GROUP INC.

                                       /s/ Manuel Pietra
                                       -----------------------------------------
                                       Name: Manuel Pietra
                                       Title: Chief Executive Officer and
                                              President

I hereby accept the above option and agree to the terms and the conditions set
forth above including the terms and conditions of the Plan.

/s/ Brandon Nussey
------------------------------------
Brandon Nussey

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