Syncspirit is independent BEP protocol implementation. Like syncthing is continuous peer-to-peer file synchronization tool.
You can download ready-to-use binaries for Linux x86_64 (AppImage), Windows 32 bit (WindowsXP is supported), Windows 64 bit and Mac OS X (Apple silicon, xattr -dr com.apple.quarantine syncspirit-fltk.app is required to launch).
Notable changes:
[fltk] allow to regenereate certificate/key pair and soft restart
[core] reduce memory consumption to ~30%
[core] do not consume CPU when idle
[core] govern file system operations (scan, read, write, delete etc.) from control thread
[core, bugfix] use system/default ssl root CAs to connect to syncthing infrastructure (might require to delete configuration from previous installation).
[fltk, bugfix] fogetting to insert deleted folder into pending list
(Syncspirit)[https://github.com/basiliscos/syncspirit/] is a syncthing-compatible is written from the scratch software in C++ as classical desktop application.