free wallpaper engine

Lean and fast Web browser with Gecko rendering engine.

Web browser w/Safari engine & many enhanced features; now free.

Lets you play go on a 9x9 board against the GNU Go engine.

The free player with a Mathematica engine.

Swfdec is an engine that loads and runs Adobe Flash animations.

High performance transactional storage engine.

Free batch downloader for image, wallpaper, video, music, etc.

Image, slideshow, wallpaper viewer, and recorder.

Qt4 wallpaper changer.

Display useful info as a wallpaper.