Installable apps
Some systems can do more than just file share and can be expanded.
By default, Nextcloud has some apps already configured, such as a photo manager with basic editing and slideshow capabilities. There are also email, calendar and contacts apps, and a note-taking app that integrates with an app for mobile devices. Beyond that, there is an excellent marketplace with apps that cover pretty much every area of functionality you’d expect, along with some niche areas such as GPX viewers for visualising outdoor activity data. Overall, it’s an excellent system.