The two hardest problems in programming are cache invalidation, naming things, and off by one errors.

The way God intended.

I’ve tried to use matrix… Is there a good matrix client? Like, one with admin commands? Maybe I just didn’t “get” it, but it seemed not even yet half baked.

You might not understand how they are going to control it, but they do. Facebook doesn’t do anything without a plan on how to either get a ton of money from something or a plan on how to destroy that thing. So the fact that they are trying to integrate into the fediverse means they have a plan. They are smarter and more evil than anyone here in the area of making money and destroying competitors, and they will 100% do one of those things, probably both.

Why not Keepass on a webdav server? Both Keepass on the computer and Keepass2Android can open the file directly. If you save it on one it will merge the changes in any other copies you have open.