Fossil vs Phabricator
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Fossil | Phabricator |
|---|---|---|
| Deploy effort | Read-the-docs project | Read-the-docs project |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | BSD-2-Clause | Apache-2.0 |
| Language | C | PHP |
| Setup difficulty | Easy | Hard |
| Min. RAM | 64 MB | 1,024 MB |
| Deployment | binary, bare-metal | bare-metal, source |
| GitHub stars | ★ 600 | ★ 12,292 |
| First released | 2006 | 2011 |
| Replaces | GitHub, Git | GitHub, Jira |
What are Fossil and Phabricator?
Fossil
Fossil is a distributed version control system that bundles bug tracking, a wiki, forum, and web interface into a single self-contained executable. It powers the development of SQLite.
- Single-file executable
- Built-in wiki and forum
- Integrated bug tracking
- Self-contained web UI
Phabricator
Phabricator is a collection of open-source tools for code review, repository hosting, bug tracking, and project management. Although original development has ended, the community fork Phorge continues it.
- Differential code review
- Repository hosting
- Maniphest task tracking
- Audit and herald rules
Fossil vs Phabricator: key differences
Fossil is written in C, while Phabricator is built with PHP. Licensing differs — BSD-2-Clause for Fossil versus Apache-2.0 for Phabricator. Fossil is the lighter option, starting around 64 MB of RAM against 1,024 MB for Phabricator. Fossil is the more established project (first released 2006), while Phabricator arrived in 2011. Phabricator has the considerably larger community, at 12,292 GitHub stars versus 600.
Why pick each one
Choose Fossil if…
- Released under the BSD-2-Clause license
- Easy to set up — beginner-friendly
- Written in C
- Tiny footprint — runs in 64 MB RAM
Choose Phabricator if…
- Released under the Apache-2.0 license
- Mature project with 12.3k GitHub stars
- Written in PHP
Frequently asked questions
Is Fossil or Phabricator better?
Neither is universally better. Phabricator has the larger community, while Fossil is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Fossil and Phabricator free and open-source?
Yes. Fossil is licensed under BSD-2-Clause and Phabricator under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Fossil and Phabricator with Docker?
Fossil: check the project docs for container support. Phabricator: check the project docs for container support.
Which is lighter on resources, Fossil or Phabricator?
Fossil has the smaller minimum footprint at 64 MB of RAM, compared to about 1,024 MB for Phabricator. Real-world usage depends on library size, user count, and enabled features.