Is there an opensource equivalent to QUIP or Trello?

Question

Task Management

I am looking for software similar to quip or trello, and maybe even Megaplan.
It is important that there be the following:
1) Statement and grouping of tasks by projects/folders.
2) Assignment of tasks to users. There are about 10 users in total.
3) Ability to attach documents.
4) The most important thing is the ability to deploy on your server.
Has anyone tried something like this?

Answer 1

Very handy thing)

Answer 2

Very easy to use Kanboard system .
Even a person who does not have knowledge in the field of network administration can handle hosting on his own server.