Virto's Kanban Board is easy to learn, can get up to speed quickly on it. It integrates well with SharePoint tasks lists so you can do list editing, too. If you want to get creative, you can do things like create groups of subtasks, assign them to different Kanban projects, then use filtering to have multiple views of the project per team/user. Virto team is also excellent at responding to questions and using your feedback. Review collected by and hosted on G2.com.

Sometimes a bit hard to drag cards to the right-most column on your board. Office profile photo doesn't always show when you assign a care to someone--you have to click on the card to make it come up. Integration with SharePoint is impaired a little bit because it's not really possible to add cards to specific task groups / subtask groups. Review collected by and hosted on G2.com.