There is no official UI for Sync on Linux. But here is an unofficial one...
BitTorrent Sync (btsync) Desktop GUI - YeaSoft International
Sort of endorsed by the company itself.
Sync Dev: Q&A with the Creator of Sync’s Linux Desktop GUI Package | The Official BitTorrent Blog
BitTorrent Sync (btsync) Desktop GUI - YeaSoft International
Sort of endorsed by the company itself.
Sync Dev: Q&A with the Creator of Sync’s Linux Desktop GUI Package | The Official BitTorrent Blog