unison-app ☆

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Description:
File synchroniser

Type: Cask | Latest Version: 2.54.0@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Productivity

Tags: sync file-sync cli backup

Install: brew install --cask unison-app

About:
Unison is a robust file-synchronization tool that allows bidirectional syncing between two locations, even on separate machines. It detects conflicts from simultaneous changes and provides a safe, interactive resolution process. Unlike simple mirroring tools, Unison ensures that data is only transferred when necessary, making it highly efficient for maintaining consistent file sets.

Key Features:

Bidirectional synchronization
Conflict detection and resolution
Cross-platform support (macOS, Linux, Windows)
Resilient to failures (can restart interrupted syncs)
Synchronization over SSH or local filesystems

Use Cases:

Keeping work and home computer file sets in sync
Backup and restoration of critical directories
Collaborative file sharing between developers

Alternatives:

rsync – Unison is bidirectional and handles conflicts, whereas rsync is typically one-way (mirror).
Syncthing – Syncthing is continuous and decentralized, while Unison is typically run manually or via cron.

Version History

Detected	Version	Rev	Change	Commit
May 1, 2026 2:26am	2.54.0	0	VERSION_BUMP	ffd000bc
Aug 18, 2025 5:46pm	2.53.7	0	VERSION_BUMP	3238cc22