NextCloud main use is file synchronization Is it? Interesting. I don’t think I’ve ever even considered using it for that purpose.

I mostly use it as an easily web-accessible interface for a variety of unified productivity and organization software (file upload/download, office suite, notes, calendar, etc), with easy ability to do stuff like create a password-protected shared folders of pictures/documents I can easily share with friends and family who don’t have accounts so they can upload/download/organize/edit files with me and each other from a browser without having to install additional software on client devices.