It has built-in auth system, but it doesn’t support 2fa, and as they wrote on this github issue https://github.com/opencloud-eu/opencloud/issues/1695 - they are not planning to add it in the nearest future.

Probably depends if you are going to use external Identity provider or not, in my case I want to use it authenticating with Authelia - which NextCloud can handle but I coulndn’t make it to work properly with OpenCloud. Those issues seems to be related:

• https://github.com/opencloud-eu/opencloud/issues/1592
• https://github.com/opencloud-eu/desktop/issues/246
• https://github.com/opencloud-eu/desktop/issues/217

Edit: if you not using external Identity Provider you should be fine though

I’m testing it since yesterday next to my current nextcloud inatance. It is much more lightweight than nextcloud and suits my needs perfectly when it comes to features. Buuuut… for now I can’t migrate to it because of issues I have with android app, I’m using authelia as IdP and after I finally made it to work together I’m constantly logged out from the mobile app, there are few unresolved issues on github that after those are sorted out I hope I can make a switch. For now I will stay with nextcloud