Drone.io - Continuous Integration For GitHub and Bitbucket That Monitors Your code For Bugs
Gitea - A painless self-hosted Git service
Buildbot - Python-based continuous integration testing framework
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.
django-git - A simple Gitweb replacement built with Django.