Apache Allura (incubating)
Allura is an open source implementation of a software "forge", a web site that manages source code repositories, bug reports, discussions, mailing lists, wiki pages, blogs and more for any number of individual projects.
To install Allura, see INSTALL.markdown
To find more documentation, ask a question, file a bug, or contribute a patch, see the links on our website. If you're not sure where to start, join the mailing list and ask.