I'd like to see a FOSS service that's functionally identical to Google Drive. Like, I could use my own server (or pay for hosting) to get the same functionality

I'd like to see a FOSS service that's functionally identical to Google Drive. Like, I could use my own server (or pay for hosting) to get the same functionality and hold all my stuff. Of course, stuff like this exists, but I don't think any of it is as good (yet). The main things I would need: - Great spreadsheets - Simultaneous editing (can send a link to someone and immediately have them edit without needing to log in) - Cloud-based (I can log in with two-step from any public computer) - Shared folders I love G Suite but kind of hate having to rely on Google, and it would be nice to host my own.