* [Syncthing v2.1.3](https://github.com/syncthing/syncthing) – Continuous file synchronization program that syncs files between multiple computers.

* [Sync-in desktop client v2.2.1](https://github.com/Sync-in/desktop) – Cross-platform desktop and CLI client for local file synchronization, multi-server management, scheduled syncs, and transfer visualization.

* [Syncs v1.3.3](https://github.com/go-pkgz/syncs) – Provides Semaphore-based primitives like SizedGroup and ErrSizedGroup to control goroutine concurrency and coordinate waiting with optional error handling and early termination.

* [desync v1.0.4](https://github.com/folbricht/desync) – Go library and CLI reimplementing casync features, compatible with casync chunk stores and catar archives.