NRSI: Computers & Writing Systems
Fonts in Cyberspace
A guide to finding script and language fonts on the Internet
Fonts In Cyberspace has moved! Actually, it has been replaced by a much more complete and up-to-date collection of links to fonts and software - ScriptSource.
Follow this link: Finding Software on ScriptSource
If you're looking specifically for IPA (International Phonetic Alphabet) fonts, see IPA Transcription with SIL Fonts.