As defined in dictionary where fox.fire is a noun which means a phosphorescent glow, especially that produced by certain fungi found on rotting wood. The screensaver has the same effect, but the colors are customizable.
Mac OS X 10.4 or higher required for FoxFire. As the screensaver is made with Apple’s Quartz Composer application, the screensaver has to be manually installed by copying over to screensaver folder.
Download FoxFire 1.0 for Mac