Are there alternatives to TextExpander on Mac OS X?

Question

I'm looking for a open source alternative to TextExpander (or TypeIt4Me or Typinator) -- not because I'm cheap, but because I'm interested in the source code. It therefore doesn't have to be as polished as the apps mentioned above.

Answer 1

If you can wait until September, Mac OS X 10.6 Snow Leopard will have rudimentary text expansion/auto-completion built in. Snow Leopard is $29 (if you're upgrading from Leopard) which is the same price as TextExpander, but then, you're getting a lot more than text expansion with Snow Leopard.

Answer 2

I don't know of any specific ones, but if you're looking for how they're created, you should probably read about InputManagers (I think that's what's used). You may also try asking on stackoverflow, Apple's cocoa-dev mailing list, or the #macdev IRC channel on Freenode.