Google released Code Search today. It is billed as the single location programmers can search for accessible code. Google Code Search
can be searched using precise regular expressions, or restricted searches for particular languages or filenames can be performed. Google's code searcher crawls and indexes the web for .tar.gz, .tar.bz2, .tar, and .zip files. The idea for the code search came about from Google's internal code base
search tool that was getting a lot of successful usage. The results from searches seem a little messy, and quite ugly, which might be a deterrent for some users, but could potentially be quite a useful tool for providing more insight into, and solving coding issues quicker.