* [Syncthing v2.1.4-rc.2](https://github.com/syncthing/syncthing) – Continuous file synchronization program that syncs files between multiple computers.

* [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.