Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Flathub
- PortableApps.com
- Chocolatey




There are many alternatives to ChronoSync for Mac if you are looking for a replacement. The best Mac alternative is FreeFileSync, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to ChronoSync and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to ChronoSync are Duplicati, Acronis True Image, GoodSync and Time Machine.
Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.




Duplicati stores encrypted, incremental backups with AES-256 encryption and GPG, compatible with Windows, Linux, MacOS. Supports cloud services like OneDrive, Google Drive, and includes a built-in scheduler, auto-updater. Run backups through a web interface or command line.




Full image and file backups, disk cloning, and partition management across Windows, macOS, iOS, and Android with ransomware protection, cloud storage, fast recovery, web-based remote management, and mobile device support for flexible, secure data protection.



A comprehensive solution for file synchronization and backup, GoodSync allows seamless and real-time file sync across desktops, mobiles, and cloud services directly, bypassing third-party servers. Ideal for both personal and professional needs.




Time Machine is the breakthrough automatic backup that’s built right into Mac OS X. It keeps an up-to-date copy of everything on your Mac — digital photos, music, movies, TV shows, and documents. Now, if you ever have the need, you can easily go back in time to recover anything.

Carbon Copy Cloner (CCC) features an interface designed to make the cloning and backup procedure very intuitive. In addition to general backup, CCC can also clone one hard drive to another, copying every single block or file to create an exact replica of your source hard drive.


DirSync Pro is a small, but powerful utility for file and folder synchronization. Java JRE 1.7 or above is needed to run DirSync Pro.




Synkron is an application for folder synchronisation and folder-backups that allows you to configure your synchronisations in detail. Despite having many features, the user interface of Synkron is very user-friendly and easy to use.




Bacula is a set of computer programs that permit managing backup, recovery, and verification of computer data across a network of computers of different kinds.




SuperDuper makes recovery painless, because it makes creating a fully bootable backup painless. Its incredibly clear, friendly interface is understandable, easy to use, and its built-in scheduler makes it trivial to back up automatically.

SyncTime is the easy-to-use and flexible solution to synchronize your files. Keep all your backup copies up to date with the click of a button, with automated schedules, from the Shortcuts app or even via AppleScript.




It's free. Especially if you suffer from subscription burnout. Cryptsync in conjunction with 7-zip for encrypted cloud backups should also get a mention.