Codase is a syntax-aware source code search engine

Search engine

A search engine is an information retrieval system designed to help find information stored on a computer system. The search results are usually presented in a list and are commonly called hits. Search engines help to minimize the time required to find information and the amount of information...

 that allows software developers to search Open Source

Open source

The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...

 repositories to find relevant source code. The alpha version went live on September 9, 2005. A subsequent beta was released on November 10, 2005. . Codase claims to host over 250M lines of C, C++, and Java code. Codase is currently out of service.