To replace everything. Mail, calendar, drive, vpn, password manager, documents etc. What are the pros and cons relative to proton? What are the mobile apps like? What assurances do you have they won’t go full proton in the future? And other questions
Mail and calendar I’m still trying to figure out. VPN you don’t need as long as you use HTTPS everywhere.
KeePassXC + KeePassDX
Collabora Office + LibreOffice
Pros: free, open source, and 100% offline with no intermediary company. Your file security is entirely in your own hands.
Cons: you must devise your own cross-device sync system. I use Syncthing + Syncthing-Fork.
Collabora is currently just bad lol. It’s best reserved for really simple edits, if not just for viewing, with all major changes made on a desktop/laptop computer. KeePassDX isn’t terrible but it can’t view all the fields that the KeePassXC desktop platform can, and getting it to take PIN instead of password for vault-unlocking is really convoluted (although you’d only have to do it once).
They’re all open-source so anyone dissatisfied with the direction that the maintainers go in can fork them at any time.
I can second most of the suggestions. I do not host an office suite (for now?) but I am syncing my keepass dbs over syncthing along with my notes and important documents. I think since 2016 or so. It works well.
Before I had a server I just synced them in a triangle between my phone, laptop and desktop. Most things had 3 copies this way. Any device could offload changes to another. Now I have a central node and the option to sync as before if the server is down. With Tailscale, I don’t need to be on the same wifi now eiter.
The keepassDX limitations are not a big deal if all you need is basic autofill.
Mail providers are hard to chose. I am leaving proton for the lack of easy smtp and their locked in nature. Get your oen domain and you will be able to switch more easily in the future.