================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                               ------------------

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                                 April 14, 2006

                         VERTICAL COMPUTER SYSTEMS, INC.
               --------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)


            DELAWARE                   000-28685              65-0393635
  ----------------------------       ------------         -------------------
  (State or other jurisdiction       (Commission            (IRS Employer
        of incorporation)            File Number)         Identification No.)


    201 MAIN STREET, SUITE 1175, FORT WORTH, TEXAS               76102
    -----------------------------------------------           ----------
       (Address of principal executive offices)               (Zip code)

    Registrant's telephone number, including area code:     (817) 348-8717

                                 NOT APPLICABLE
          -------------------------------------------------------------
          (Former Name or Former Address, If Changed Since Last Report)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

|_|   Written  communications  pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement  communications  pursuant  to  Rule  14d-2(b)  under  the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement  communications  pursuant  to  Rule  13e-4(c)  under  the
      Exchange Act (17 CFR 240.13e-4(c))

================================================================================
<PAGE>

ITEM 5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS;  ELECTION OF DIRECTORS;
APPOINTMENT OF PRINCIPAL OFFICERS

      David Braun, the Controller and Principal  Accounting  Officer of Vertical
Computer Systems, Inc., a Delaware corporation (the "Company"), has resigned for
personal reasons (the "Resignation").  The effective date of the Resignation was
6:00 pm local time on April 14,  2006.  Mr.  Braun did not resign as a result of
any  disagreement  with the  Company on any  matter  relating  to the  Company's
operations, policies or practices, and Mr. Braun did not furnish a letter to the
Company with respect to any such disagreement.


ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

      (a)   Not applicable.

      (b)   Not applicable.

      (c)   Exhibits - None.


                                       2
<PAGE>

                                   SIGNATURES

      Pursuant to the  requirements  of the Securities  Exchange Act of 1934, as
amended,  the  Registrant  has duly caused this Current Report on Form 8-K to be
signed on its behalf by the undersigned hereunto duly authorized.

Date: April 18, 2006             VERTICAL COMPUTER SYSTEMS, INC.


                                 By:    /s/ Richard Wade
                                        -------------------------------------
                                 Name:  Richard Wade
                                 Title: President and Chief Executive Officer


                                       3
{"company-data": {"conformed-name": "VERTICAL COMPUTER SYSTEMS INC", "cik": "0001099509", "assigned-sic": "7389", "irs-number": "880441551", "state-of-incorporation": "NV", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-28685", "film-number": "06764970"}, "business-address": {"street1": "6336 WILSHIRE BLVD", "city": "LOS ANGELES", "state": "CA", "zip": "90048", "phone": "3236584211"}, "mail-address": {"street1": "6336 WILSHIRE BLVD", "city": "LOS ANGELES", "state": "CA", "zip": "90048"}, "former-company": {"former-conformed-name": "SCIENTIFIC FUEL TECHNOLOGY INC", "date-changed": "19991122"}}
================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                               ------------------

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                                 April 14, 2006

                         VERTICAL COMPUTER SYSTEMS, INC.
               --------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

            DELAWARE                   000-28685              65-0393635
  ----------------------------       ------------         -------------------
  (State or other jurisdiction       (Commission            (IRS Employer
        of incorporation)            File Number)         Identification No.)

    201 MAIN STREET, SUITE 1175, FORT WORTH, TEXAS               76102
    -----------------------------------------------           ----------
       (Address of principal executive offices)               (Zip code)

    Registrant's telephone number, including area code:     (817) 348-8717

                                 NOT APPLICABLE
          -------------------------------------------------------------
          (Former Name or Former Address, If Changed Since Last Report)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

|_|   Written  communications  pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement  communications  pursuant  to  Rule  14d-2(b)  under  the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement  communications  pursuant  to  Rule  13e-4(c)  under  the
      Exchange Act (17 CFR 240.13e-4(c))

================================================================================
ITEM 5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS;  ELECTION OF DIRECTORS;
APPOINTMENT OF PRINCIPAL OFFICERS

      David Braun, the Controller and Principal  Accounting  Officer of Vertical
Computer Systems, Inc., a Delaware corporation (the "Company"), has resigned for
personal reasons (the "Resignation").  The effective date of the Resignation was
6:00 pm local time on April 14,  2006.  Mr.  Braun did not resign as a result of
any  disagreement  with the  Company on any  matter  relating  to the  Company's
operations, policies or practices, and Mr. Braun did not furnish a letter to the
Company with respect to any such disagreement.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

      (a)   Not applicable.

      (b)   Not applicable.

      (c)   Exhibits - None.

                                       2
SIGNATURES

      Pursuant to the  requirements  of the Securities  Exchange Act of 1934, as
amended,  the  Registrant  has duly caused this Current Report on Form 8-K to be
signed on its behalf by the undersigned hereunto duly authorized.

Date: April 18, 2006             VERTICAL COMPUTER SYSTEMS, INC.

                                 By:    /s/ Richard Wade
                                        -------------------------------------
                                 Name:  Richard Wade
                                 Title: President and Chief Executive Officer

                                       3