Koders is a search engine for source code. It enables developers to easily search and browse source code in thousands of projects hosted at hundreds of open source repositories.

This could come in useful. Google is sometimes really helpful for dealing with technical things and sometimes really not helpful. In particular, mailing lists tend to get mirrored a lot and google as no way of aggregating the same email posting repeated in 1000 different places. They also tend to ignore punctuation in search terms. word1.word2 is often a very different search then "word1 word2"