When comparing Syncthing vs Sync, the Slant community recommends Syncthing for most people. In the question“What are the best personal file-syncing solutions?” Syncthing is ranked 1st while Sync is ranked 6th. The most important reason people chose Syncthing is:
Licensed under [MIT](https://github.com/calmh/syncthing/blob/master/LICENSE).
Ranked in these QuestionsQuestion Ranking
Pro Free and open-source
Licensed under MIT.
Available for Linux, OS X and Windows and web.
Pro Reasonably active community forum
Pro Works out of the box
Requires no configuration to protect your privacy; it just works.
Pro Unofficial Android client available
An Android app was created by a third-party.
Pro 5GB of free storage
250% more space than Dropbox basic plan.
Pro Privacy conscious
Terms and conditions favor user privacy.
Data is fully encrypted on the client-side, both in-transit and at-rest.
Pro Two-factor authentication
Even free accounts offer 2FA.
Con In beta
Although mostly stable, such stability is not guaranteed, and support is only community driven. Caution advised.