freefilesync ☆
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Description:
Folder comparison and synchronization software
Type: Cask  |  Latest Version: 14.9@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Productivity
Tags: sync backup file-management comparison utility
Install: brew install --cask freefilesync
About:
FreeFileSync is a robust open-source folder comparison and synchronization tool that visually highlights differences between file systems. It offers multiple sync modes, including two-way, mirror, and update, allowing users to efficiently manage backups and data mirroring. The software is designed for high performance, handling large datasets with features like optimized scanning and real-time sync capabilities.
Key Features:
  • Visual folder comparison with detailed change detection
  • Supports multiple sync modes (Two-way, Mirror, Update)
  • Batch jobs for automated synchronization tasks
  • Cross-platform support (Windows, macOS, Linux)
Use Cases:
  • Creating local backups of critical data
  • Synchronizing files between a desktop and an external drive
  • Mirroring a project folder to a cloud storage mount
Alternatives:
  • rsync – Command-line utility offering powerful scripting capabilities but lacks a native GUI.
  • Syncthing – Focuses on continuous peer-to-peer file synchronization across multiple devices rather than scheduled local folder syncing.
Version History
Detected Version Rev Change Commit
Mar 29, 2026 4:00pm 14.9 0 VERSION_BUMP 0f5ee858
Feb 22, 2026 1:07pm 14.8 0 VERSION_BUMP 98636aaa
Jan 21, 2026 5:28pm 14.7 0 VERSION_BUMP ac1c3d97
Jul 30, 2025 9:51pm 14.4 0 NEW f54b0f77
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