Lifesaver is a GNOME Screensaver that displays recent posts about Ubuntu on Twitter, Identi.ca, and FriendFeed. Since it performs automated searches of various unfiltered Internet resources, you may encounter language and opinions that are offensive to those of a sensitive disposition, or inappropriate in a workplace environment.
typhon is a slim and themeable OpenGL-based frontend, dashboard, and program launcher. It's meant to be easily used on Linux HTPCs, but also works on standard desktops or as netbook launcher. It has picture support for background, icons, stencils, and preview pictures. There's also an optional auto-screenshot mode that creates a preview picture of the launched app after a user-configured time. It also has a built-in OpenGL ffmpeg video player, which can be used to video preview programs and emulators/ROMs or simply to watch some movies. The video and everything else can be rotated into any direction and the position can be saved. Everything can be configured by the user, including colors, whole color themes, font, font size (any TTF font will do), optional sound effects, optional 3d icons (using glut), and background and preview pictures. Already installed screensavers can also be used as backgrounds using compositing and transparency.
After Dark Classic Set is a collection of three screen savers from the popular After Dark screen saver. You can enjoy the Flying Toasters, Mowing Man, and Boris screen savers. They use the graphics and sounds from the original After Dark screen savers. Flying Toasters features 29 characters, including all four generations of toasters. It also includes the Flying Toaster song.