iScreensaver - iScreensaver is a multi-featured software that uses Image, Live Photo, Video, Movie, and 3D Model files to create screensavers for Windows and Macintosh.
Web-Page-Screensaver - Web-Page-Screensaver is an open-source tool that is designed to display a web page as your screensaver.
Before Dawn - Before Dawn is an open-source and robust screensaver application that uses web technologies to perform its functionalities.
Padbury Clock Screensaver - Minimal screensaver for Mac
XED Flash Screensaver Creator - XED Flash Screensaver Creator is capable of converting any SWF file into a screensaver file.
Save Hollywood - Play movies as your screen saver