Windows TrueType (including collections), OpenType, and Adobe Type 1 fonts.
FontRainbow is currently only available for Windows. A Mac version is planned.
What early users have said
"it is just a simple, wonderful piece of programming"
"I've spent a bit more time
combining 2 font sources on one computer and looking for duplicates - I wouldn't
have considered the task without FontRainbow."
"I have been playing with
it, up till 5am last night LOL!!"