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                                                                    EXHIBIT 21.1

                         INTELLIGENT SYSTEMS CORPORATION

           LIST OF PRINCIPAL SUBSIDIARY COMPANIES AS OF MARCH 1, 2006



SUBSIDIARY NAME                         STATE OF ORGANIZATION
-----------------------                 ---------------------
                                     
ChemFree Corporation                    Georgia
CoreCard Software, Inc.                 Delaware
QS Technologies, Inc.                   Georgia
VISaer, Inc.                            Delaware