What is the crowd's opinion of Librevault?

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There are certain differences between Librevault and Syncthing now:

• Librevault is simpler for the end user. From my perspective, Syncthing doesn't aim to be user-friendly. More like geek-only solution.
• Librevault supports adding a folder by key, like BTSync. And also, it supports a URL scheme for adding a new folder just by clicking it in the browser.
• inotify, fsevents, kqueue and ReadDirectoryChangesW support out of the box. Syncthing requires you to install a separate third-party plugin for this.
• DHT support, so it doesn't need any trackers for peer discovery. DHT is Mainline DHT, so it can connect to BitTorrent clients and ask them for peers. It means, that Librevault can participate in the world's largest distributed peer discovery network and will not suffer the lack of DHT nodes.

Also, it has a proper (!) desktop UI inspired by BitTorrent Sync 1.3.

There are certain differences between Librevault and Syncthing now:

• Librevault is simpler for the end user. From my perspective, Syncthing doesn't aim to be user-friendly. More like geek-only solution.
• Librevault supports adding a folder by key, like BTSync. And also, it supports a URL scheme for adding a new folder just by clicking it in the browser.
• inotify, fsevents, kqueue and ReadDirectoryChangesW support out of the box. Syncthing requires you to install a separate third-party plugin for this.
• DHT support, so it doesn't need any trackers for peer discovery. DHT is Mainline DHT, so it can connect to BitTorrent clients and ask them for peers. It means, that Librevault can participate in the world's largest distributed peer discovery network and will not suffer the lack of DHT nodes.

Also, it has a proper (!) desktop UI inspired by BitTorrent Sync 1.3.

You might want to check out the review segment of this episode of LAS which reviews OpenMediaVault and compares it to FreeNAS. btw I think you mean OpenMediaVault since you're talking about NAS distributions. LibreVault is an open source peer 2 peer syncing program kinda like Syncthing but works more like Bittorrent Sync.