From Epiphan Systems:
Epiphan customers can download free Epiphan Software (Download Software). Epiphan's software makes it possible to save and print captured images, to setup a periodical "save" command to capture images to disk or record an AVI file (Windows platform only). In addition to that, VGA2USB software is compatible with DirectShow on Windows and QuickTime on Mac OS X, which allows third-party applications to use VGA2USB as a video input.
Software development kits are also available for specialized applications.