For now, it is still in beta, but it sounds promising enough !
Krugle allows you to search for specific programming code, and promises to improve the production speed of developers.
It’s index contains databases of SourceForge and the Sun Developer Network. They claim that they have an advantage to alternatives like Codefetch and Koders in the possibility to add annotations and bookmarks and to sort the search results into tabs. Each search projects gets it’s own url, so your findings can be easily shared with colleagues.