“0x1FFF” has pulled together a great (and expanding) list of open source projects developed, sponsored or just hosted by Google. Some great tools here, poke around and you’ll probably find something to make serious computing easier. I’ve used Google Web Toolkit extensively, and i’m about to try out CRUSH and MobWrite.

http://blog.0x1fff.com/2009/12/35-google-open-source-projects-that-you.html