Codase is a vertical search engine focused on source code. You’ve got Google, you have Yahoo and Ask, but none of these specifically addresses code, which is precisely where Codase comes in. It searches the web for code snippets from more than half a billion lines of source code (c c++ Java, etc). What’s more, Codase reads code for what it is, i.e., not text, so results much more relevant and useful. Filters and customized search functions are readily available. Users can search functions, constants, macros, strings, etc. You’ve also got search by method call, method definition, class definition and variable among others. Results can be filtered by project and Codase will give you related keywords. You can browse APIs too.