Syncthing is just a synchronization system, whereas Nextcloud is a whole platform that just happens to include sync. It is more like Google Drive as it has a we

Syncthing is just a synchronization system, whereas Nextcloud is a whole platform that just happens to include sync. It is more like Google Drive as it has a web interface for accessing files and a bunch of other apps (similar to Google Docs) to interact with them. It is also centralized, whereas Syncthing is peer-to-peer