WeKan

WeKan is an Open-Source and collaborative kanban board application.

Whether you’re maintaining a personal todo list, planning your holidays with some friends, or working in a team on your next revolutionary idea, Kanban boards are an unbeatable tool to keep your things organized. They give you a visual overview of the current state of your project, and make you productive by allowing you to focus on the few items that matter the most.
Depending on target environment, some configuration settings might need to be adjusted.
For full list of configuration options call:
$ wekan.help

Note: At https://snapcracft.io/wekan video 2023-12-08, after Meteor News, WeKan Interview starts at 22min 22sec.