I guess it's fine if you want a widely integrated solution that can do a lot of different things.
I'm using it only for myself, so definitely not representative of using it in a company but maybe my experience helps.
The just working part, at least for me, are the calendar and contact plugins. Never had any issues with those.
File sync with the desktop client works mostly fine on Linux where I use it most of the time. However, I've run into issues with it on Windows. Using the automatic bandwidth limit for example might cause Explorer to freeze. [1]
Also forget about the automatic upload feature in the Android client, I switched to FolderSync for a reliable experience.
I've managed to get OnlyOffice working, Collabora Office previously broke for some reason. However latest upgrade also broke OnlyOffice. The solution for this is to put the secret and authorization headers into config.php in addition to the OnlyOffice plugin settings. [2] No idea why, but that is a thing.
My Nextcloud runs as a normal PHP application and I haven't had any issues with upgrading yet. Going from, I think, version 23 on Debian 11 to 27.1 now on a different machine running Debian 12 since I started using it.
Maybe I should find something more focused on file syncing, but the all-in-one approach of Nextcloud and its various plugins makes trying some new services very easy.
The just working part, at least for me, are the calendar and contact plugins. Never had any issues with those. File sync with the desktop client works mostly fine on Linux where I use it most of the time. However, I've run into issues with it on Windows. Using the automatic bandwidth limit for example might cause Explorer to freeze. [1] Also forget about the automatic upload feature in the Android client, I switched to FolderSync for a reliable experience.
I've managed to get OnlyOffice working, Collabora Office previously broke for some reason. However latest upgrade also broke OnlyOffice. The solution for this is to put the secret and authorization headers into config.php in addition to the OnlyOffice plugin settings. [2] No idea why, but that is a thing.
My Nextcloud runs as a normal PHP application and I haven't had any issues with upgrading yet. Going from, I think, version 23 on Debian 11 to 27.1 now on a different machine running Debian 12 since I started using it.
Maybe I should find something more focused on file syncing, but the all-in-one approach of Nextcloud and its various plugins makes trying some new services very easy.
[1] https://github.com/nextcloud/desktop/issues/5031
[2] https://github.com/ONLYOFFICE/onlyoffice-nextcloud/issues/60...