GitPrep : GitPrep is Github clone. you can install portable github system into unix/linux. You can create users and repositories without limitation.
iceScrum : Free and OpenSource platform for your agile developments
PeoplePods : PeoplePods is a developer-friendly social software toolkit
Build applications where people meet, talk, share, read, work, publish and explore.
Weblate is a free web-based translation tool with tight Git integration. It features simple and clean user interface, propagation of translations across subprojects, quality checks and automatic linking to source files.