Open Source Fork Alternatives
A curated collection of the 2 best open source alternatives to Fork.
The best open source alternative to Fork is GitButler. If that doesn't suit you, we've compiled a ranked list of other open source Fork alternatives to help you find a suitable replacement. Other interesting open source alternative to Fork is GitComet.
Fork alternatives are mainly Version Control & Collaboration. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Fork.
A Git client with a GUI and CLI built around stacked and parallel branches, for developers and their coding agents.

Working several branches at once, and letting coding agents do the same, is what GitButler was designed from scratch for, as a Git-based version control interface with both a graphical app and a command line tool.
It drops into any existing Git repository as a friendlier user interface, so nothing about the repository itself has to change. The desktop app is built with Tauri, its UI written in Svelte and TypeScript and its backend in Rust. The but CLI is that same Rust engine behind a command line front end.
The differences from vanilla Git are concentrated in branch and commit handling.
- Stacked branches: build branches on top of other branches, with automatic restacking when you amend.
- Parallel branches: work on several branches at the same time instead of switching between them.
- Commit management: uncommit, reword, amend, move, split and squash by dragging or with short commands.
- Undo timeline: every operation and change is logged and can be reverted.
- First class conflicts: rebases always succeed, and commits can be marked conflicted and resolved in any order.
- Forge integration: authenticate to GitHub, GitLab or Bitbucket to open pull requests and read CI status.
Built-in AI handlers draft commit messages, branch names and pull request descriptions, and hooks or skills can be installed for modern agent systems. The license is fair source, so you may use, read and contribute but not build a competitor, and it turns into MIT after two years.
Written in Rust, this local-first desktop Git client stays responsive on huge repositories and doubles as a difftool and mergetool.

GitComet began with the experience of browsing something the size of Chromium in an existing Git GUI and watching it stall. It is a desktop client for Linux, Windows, and macOS aimed at teams who want browsing, history, and file diffs to stay usable on repositories that defeat other tools.
The application is written in Rust on GPUI with gix underneath, and it expects a local Git installation of 2.50 or newer. Prebuilt binaries come from GitHub Releases, the Microsoft Store, a Homebrew cask, an apt repository, the AUR, and Gentoo's GURU overlay, or you can build it yourself with Cargo.
The open source edition covers the full desktop workflow.
- Repository work: remotes, pull and push, staging, commits, worktrees, branching, and full history.
- Multi-repository browsing: several repositories stay open in one place.
- Diffs and merges: inline and side by side diffs, plus two-way and three-way merge tools.
- Git integration: one setup command registers GitComet as difftool and mergetool, headless for scripts and CI, windowed when a display is available.
- Drop-in compatibility: KDiff3 and Meld invocation forms are accepted, so existing tool configuration keeps working.
- Themes: built-in themes are embedded in the binary and custom JSON bundles load from a per-user directory.
Crash handling is careful, writing panic logs and recovery markers to platform state directories and surfacing a prefilled issue report on the next launch. A planned Professional edition adds agent and forge integrations for a one-off fee, while the open source edition stays free for personal and commercial use under AGPL 3.0.