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 Allura/docs/getting_started/installation.rst or https://forge-allura.apache.org/docs/getting_started/installation.html.
Website: https://allura.apache.org/
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.