This would be cool regarding the current scaling problems with too many users choosing the same instance (it would make “distributing” the load easier my making it possible to move already created, existing accounts, if the user wishes to), and also would it solve the problem if an instance is to be shut down for whatever reason, people also could “take their stuff” and go “somewhere else”. Let’s see, maybe it’ll be possible in the future.

If I were to switch from Lemmy to KBin (or vice versa), would I have to start over (e.g. create a new account there and lose all my comments etc.)? Or would it be possible to “migrate”?

https://quant.com

The closest free alternative to Trello would be Planka, IMHO. It works really well (rock stable, quick, painless), is pretty and doesn’t need much resources. The only thing I miss (which Trello also lacks, btw) is the ability to have subtasks in the way Jira allows them; for this, Plane or Leantime might be good candidates (I haven’t used either of them yet, though).