ProjectForge is a web-based solution for project management including time tracking, gantt-charting, financial administration, issue management, controlling and managing work-break-down-structures (e. g. together with JIRA as issue management system). Extend ProjectForge with your own plugins.
Fossil is a distributed version control system, quite robust and easy to use. It manages local and remote repositories, user permissions, has a built-in wiki, bugtracker, release blog and an extendable web interface. It's github-in-a-box as all features are packed into a stand-alone executable which also doubles as server. Internally the database utilizes SQLite and allows extending that or its user interface through TCL or the builtin TH1 scripting language. An optional JSON API permits further
Trac is a software project and release management tool, and source control frontend for Git and Subversion. It provides issue tracking, timelines, progress/roadmap tracking and documentation features (Wiki with MarkDown support).
Kanbard is a simple visual task board software solution. Inspired by the Kanban methodology, it provides a visual and clear overview of your projects.