Nextcloud was a fork of Owncloud. There are a bunch of blogs that compare the various soltuions if you search for "Nextcloud vs Seafile vs Sparkleshare". I've

Nextcloud was a fork of Owncloud. There are a bunch of blogs that compare the various soltuions if you search for "Nextcloud vs Seafile vs Sparkleshare". I've only set up Nextcloud once, after watching a co-worker deploy it. I appreciated that it is self hosted and supports many cloud storage options. As to which is better suited for your needs, you would want to research all of them. My preference is Chroot SFTP + the LFTP client. It's the fastest sync I have ever used and trivial to set up both client and server. You can get auto-syncing with inotify or a cron job in this manor.