Focalboard

Comes in offline single user version. Multi-user version is an add-on module for Mattermost.

Advertises cloud services literally every time you open the application.

Tried it for a few weeks. Don't like it. It's bad at batch entry and editing of tasks which makes cleaning out the board week-to-week difficult. Ultimately I uninstalled and abandoned it because the batch editing was poor.

I did like that you can create arbitrary properties and different views which pivot on those properies. You can have a "context" property and table or list view which makes it easy to drag and drop tasks between those different contexts. Properties can be easily shown in other views so the progress view shows the contexts while having columns operate as progress reports.