One very large list of font managers:
http://cg.scs.carleton.ca/~luc/fontmanagers.html

Mentioned because my Font Manager, Cfont Pro, is mentioned.

Check out these posts too:

  1. Free & Powerful File Managers using Ajax/PHP/JS
  2. Download load managers slowing down?
  3. Cfont Pro: Font Manager v3 released
  4. Large list of Online Generators
  5. Make your own font with FontStruct
  6. A better list of web 2.0 applications
  7. Ultimate List of Free Windows Software from Microsoft