Exhibit 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of FalconStor Software, Inc., a Delaware Corporation (the Company) on Form 10-Q for the period ended June 30, 2010, as filed with the Securities and Exchange Commission on the date hereof (the Form 10-Q), I, ReiJane Huai, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant section 906 of the Sarbanes-Oxley Act of 2002, that to the best of our knowledge:
(i) the Form 10-Q fully complies, in all material respects, with the requirements of section 13(a) or section 15(d) of the Securities Exchange Act of 1934; and
(ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and result of operations of the Company.
| /s/ ReiJane Huai |
| ReiJane Huai |
| Chief Executive Officer |
| August 6, 2010 |