Quire

A task tool built around nested to-do lists and Kanban.

Best for

Teams that think in nested tasks.

Pricing

Free tier; paid per-user. (Always confirm current pricing on the vendor’s site.)

Where it fits

Quire sits in the Task management category. It is a solid choice when your priority is teams that think in nested tasks. As with any tool, trial it on a real project with the people who will use it daily before committing.