When comparing BitTorrent Sync vs Syncthing, the Slant community recommends Syncthing for most people. In the question“What are the best personal file-syncing solutions?” Syncthing is ranked 2nd while BitTorrent Sync is ranked 8th. 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 No service cost, storage limits, perfomance limits or privacy concerns
Since BitTorrent Sync uses P2P technology and does not require an external server from a third party, the only limitation if what is available to the user.
Pro Clients on most platforms available
BitTorrent Sync is available for Windows, Mac, Linux, Android, iOS, Windows Phone and BSD.
Pro Self hosted
If user opens a malicious website that website may create users to access your data ("When registering, http traffic for creating new user on loopback http://127.0.0.1:8888"). Being self hosted one does not need to open a site to get to their files.
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.
Being proprietary, it's harder to audit.
Con Has some risky attack vectors
The only really good thing it has is that data is self-hosted (i.e. hosted on a server running on your machine with data that are on your machine).
- If user opens a malicious website that website may create users to access your data ("When registering, http traffic for creating new user on loopback http://127.0.0.1:8888")
- GetSync.com server receives many (all?) hashes in cleartext when sharing the directory.
Con Pro version for a fee
Selective Sync only available in Pro version. Business use is not allowed with free and Pro versions.
Con One peer of your network always has to be online to propagate changes to the other peers
Con Android app drains battery fast
Con In beta
Although mostly stable, such stability is not guaranteed, and support is only community driven. Caution advised.