FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
NexusFont - Choose and manage your fonts with Nexus Font.
Glyphs - Make everything from dingbat webfonts to full-fledged text typefaces in the most Mac-like font...
Font Manager - Simple font management for GTK+ desktop environments
FontCreator - This professional font editor allows you to create and edit TrueType and OpenType fonts.
Maintype - MainType is a professional font manager that allows you to view, manage, install and print your...