Web 2.0 API's

[filthy123]

I don't know if you guys would use this, but I figured it would be neat for some mashup sites.

API Directory - ProgrammableWeb

 

[stickycarrots]

I've been using ProgrammableWeb for awhile. It's a great API site.

 

[Rage9]

Sweeeeet, a programmers dream. +rep

 

[jryan21]

It's a goldmine. Thanks for posting; I was meaning to bookmark it a while back, but forgot about it.