LibreBoard 
LibreBoard is an open-source kanban board that let you organize things in cards, and cards in lists. You can use it alone, or with your team and family thanks to our real-time synchronisation feature. Libreboard is a land of liberty and you can implement all sort of workflows on it using tags, comments, member assignation, and many more.
Since it is a free software, you don’t have to trust us with your data and can install LibreBoard on your own computer or server. In fact we encourage you to do that by providing one-click installation for the Sandstorm platform and verified Docker images.
LibreBoard is released under the very permissive MIT license, and made with Meteor.