Font Manager - Simple font management for GTK+ desktop environments
Google Fonts - Making the web more beautiful, fast, and open through great typography
CufonFonts - The world's most comprehensive Webfonts supported free font archive. For designers and developers.
Fontspace - Free downloads of 70,000+ legally licensed fonts that are perfect for your design projects. The best place in the universe to search for amazing fonts.
NexusFont - Choose and manage your fonts with Nexus Font.
Dafont - Archive of freely downloadable fonts. Browse by alphabetical listing, by style, by author or by popularity.