ShoeBox
ShoeBox is a free Adobe Air based app for Windows and Mac OSX with game and ui related tools. Each tool uses a drag and drop - or clipbord interaction for a quick workflow.
BMFont
This program will allow you to generate bitmap fonts from TrueType fonts. The application generates both image files and character descriptions that can be read by a game for easy rendering of fonts.
The program is freeware and open source, but a donation is greatly appreciated.
