Unison UI for macOS

A native macOS GUI for the Unison File Synchronizer.

Two-way file synchronization between local folders and remote machines over SSH, with visual conflict review before synchronized files are changed.

Download the .app View on GitHub

brew install --cask bcourbage/tap/unison-ui

Requires macOS 15 (Sequoia) or later, Apple Silicon. Free and open source under the GPLv3. Currently ships Unison 2.54.0.

Reviewing changes before a sync, with a conflict and per-item direction — Review changes before syncing, with conflicts and per-item direction.

Configure a profile with local and remote (SSH) roots.

Settings: notification and sound on sync completion — Sync-completion notifications in Settings.

Settings: reconcile window layout options — Reconcile display options in Settings.

Features

Two-way synchronizationKeep files and folders current on both sides.
Local and remote roots over SSHSync a folder on this Mac against another machine.
GUI profile editorSet a profile's roots, paths, ignore rules, and options in a form, with no configuration file to hand-edit.
Conflict reviewEvery proposed change is shown before it is applied to either root.
Per-item controlFlip the sync direction of any item, or skip it, in the results.
Stale archive cleanupReclaim superseded Unison archive files safely, moved to the Trash, leaving live sync state untouched.
Native macOS GUIReal menus, notifications, and keyboard control, with no terminal required.
Keyboard shortcutsRun, stop, rescan, flip a row's direction, and skip, all from the keyboard.
Self-containedThe Unison File Synchronizer engine is embedded; no separate unison CLI needed.
Command-line integrationStart a profile from Terminal: under the Graphical default, unison <profile> (or explicit unison -ui graphic <profile>) opens the app on it. Pass session options like -path Documents, review the changes in the app, or use -ui text for scripts. See the manual.
Built-in updatesDelivered through Sparkle from a cryptographically signed feed.
Signed & notarizedRelease builds are Developer ID-signed and notarized by Apple.

What it is

Unison UI for macOS is a native front end for the Unison File Synchronizer, written in Swift and AppKit. It embeds Unison's compiled engine, so it performs the same two-way synchronization Unison is known for, locally or over SSH, with a modern macOS interface and a clear conflict-review step. See the manual for a feature-by-feature guide, or the FAQ for common questions.