Which analogue of Trello (KANBAN) to deploy at home?

Question

ERP

We need a KANBAN board for 5 users. Now we use Trello, but there is a strong desire to raise this on our server, because trade secret + high price of information.
Tell me, what system is better to deploy on your site? Who uses what?
From the desired: Open Source, LDAP authorization.
And of course, an application for a smartphone would be ideal (you can pay).

Answer 1

https://github.com/gitscrum-community-edition/lara...

Answer 2

Redmine
There is a plugin for KANBAN