macOS

Homebrew

GitComet supports macOS 13 Ventura or newer on Apple Silicon and Intel Macs.

Install the desktop app and gitcomet command with the Homebrew cask:

brew install --cask gitcomet

The cask includes the command used by gitcomet setup, difftool, and mergetool; a separate CLI package is not needed.

Disk image (.dmg)

If you do not want to use Homebrew, you can also install GitComet manually from the macOS disk image:

1. Download the .dmg file for arm64 (Apple Silicon) or x86_64 (Intel) from GitComet releases.
2. Open the disk image.
3. Drag GitComet to your Applications folder.
4. Launch GitComet from Applications.

Dragging the app into Applications does not install a shell command. You can invoke the bundled executable directly:

/Applications/GitComet.app/Contents/MacOS/gitcomet --help

Use that same path with setup to register the app as your Git diff and merge tool.

macOS troubleshooting

Current public macOS downloads are distributed as notarized disk images. If macOS reports that an app is damaged or cannot be opened, download a fresh copy of the latest release for your processor and replace the older app. Include the release filename and exact macOS message in a report if the problem persists.

If GitComet cannot find Git, open Settings → Git executable and check the detected version and path. Select a Git 2.50-or-newer executable; the Git version supplied by your existing development tools may be older.

Verify

git --version
gitcomet --help

For a disk-image installation, use the bundled executable path above. Launch GitComet from Applications and open a repository to finish verification.