Port from Windows recreation of classic
Mind Console Productions has ported a version of a classic 1989 screensaver called Starry Night, part of the After Dark collection from Berkeley Systems. The new version is rather ironically ported from scratch based on a re-creation of it made for Windows systems. The original was first released for Mac before appearing on Windows, but no universal binary of the After Dark collection was ever made. The last official version for OS X was released in 2003.
Google offers Visigami
Google's Mac Team has released Visigami, an image search application and screen-saver. The open-source application, available under Apache license, can search from three different image sources, including Google Images, Picasa, and Flickr. From within the application, users can specify any image search query and images matching the search will start animating on the screen. According to the documentation, there are multiple ways of animating the images: fan, carousel, and grid as well as a few different camera views: fixed, autopan, and mouse pan. The screen-saver uses the same settings that were setup by the application, but the team says it is easier to tweak the settings in the application than to run the screen-saver. In addition, users also have the ability to use sliders to adjust settings such as display speed and zoom.