Version 0.9 of OpenGrok is now available.

OpenGrok is a source code search and cross reference engine, which aims to help you search, cross-reference and navigate your source tree. It can understand different program file formats and version control histories, including Mercurial, Git, SCCS, RCS, CVS, and Subversion.

Its search engine can search for full text, definitions, symbols, path and revision history, and restrict searches to any subtree. Its online cross-reference functionality features syntax high-lighting, and a customised look and feel, which can be modified using CSS stylesheets.