Exhibit 31.1

                            CERTIFICATION PURSUANT TO
                  SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

     I, Earnest Mathis, Jr., President, Chief Executive Officer and Chief
Financial Officer of Xedar Corporation (the "Registrant"), certify that:

     1. I have reviewed this Annual Report on Form 10-KSB of Registrant.

     2. Based on my knowledge, this Annual Report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this Annual
Report.

     3. Based on my knowledge, the financial statements and other financial
information included in this Annual Report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
Registrant as of, and for, the periods presented in this Annual Report.

     4. As the Registrant's sole certifying officer, I am responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the Registrant and we have:

          a) designed such disclosure controls and procedures to ensure that
     material information relating to the Registrant, including its consolidated
     subsidiaries, is made known to us by others within those entities,
     particularly during the period in which this Annual Report is being
     prepared;

          b) evaluated the effectiveness of the Registrant's disclosure controls
     and procedures as of a date within 90 days prior to the filing date of this
     Annual Report (the "Evaluation Date"); and

          c) presented in this Annual Report our conclusions about the
     effectiveness of the disclosure controls and procedures based on our
     evaluation as of the Evaluation Date.

     5. As the Registrant's sole certifying officer, I have disclosed, based on
our most recent evaluation, to the Registrant's auditors and the audit committee
of Registrant's board of directors (or persons performing the equivalent
function):

          a) all significant deficiencies in the design or operation of internal
     controls which could adversely affect the Registrant's ability to record,
     process, summarize and report financial data and have identified for the
     Registrant's auditors any material weaknesses in internal controls; and

          b) any fraud, whether or not material, that involves management or
     other employees who have a significant role in the Registrant's internal
     controls.

     6. As the Registrant's sole certifying officer, I have indicated in this
Annual Report whether or not there were significant changes in internal controls
or in other factors that could significantly affect internal controls subsequent
to the date of our most recent evaluation, including any corrective actions with
regard to significant deficiencies and material weaknesses.

Date:    July 14, 2006            Signature:  /s/ Earnest Mathis, Jr.
                                              -------------------------------
                                              Earnest Mathis, Jr., President,
                                              Chief Executive Officer and
                                              Chief Financial Officer


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