Code search

With google code search going away, I did a quick eval of the options. It was surprisingly easy - I just tried an android search, only one found answers: Grepcode

• includes android trees
• eclipse/intellij integration
• API - you can see all source code they crawl, including versions
• even allows binary download for jar/javadoc/source

Other options: 

http://www.koders.com - no android

http://opensearch.krugle.org - even fewer projects indexed