iScreensaver Designer 3 is a cross platform design tool for creating screensavers that will run on both Windows and Macintosh operating systems.
Convert any QuickTime or Flash movie file, or slide shows of any still images, into standalone installers for Macintosh OS 9 to 10.4, and Windows ME, 2000, XP and 2003.
Includes a wizard for creating your first screensaver quickly and easily.
For Mac OS X. An older, unsupported classic version for Mac OS 8/9 is also available for download on this site.