Fossil

Fossil provides a distributed version‑control system that also incorporates project‑management tools such as a bug tracker, wiki, forum, email alerts, chat, and technotes. The repository data are stored in a single SQLite database, giving atomic commits and automatic self‑checks that help preserve consistency even after crashes or power loss. All functionality is accessed through a built‑in, themeable web interface, and the same executable that runs the repository also serves the project’s website, documentation, and embedded wiki pages.

The tool is delivered as a single, self‑contained binary for Linux, macOS, and Windows, making installation a matter of placing the file on the user’s PATH. It can be hosted on modest hardware—a low‑cost VPS or a Raspberry Pi—and communicates over standard HTTPS or SSH, allowing operation behind firewalls and on low‑bandwidth connections. An “autosync” mode reduces unnecessary forking and merging by keeping replicas up to date automatically.

Fossil is released under a 2‑clause BSD license, is free to use and modify, and is positioned as a stable, self‑hostable alternative to other distributed SCM systems while offering integrated issue‑tracking and documentation without external services.