Chapter 12: Agile Tools
Trello (recommended): https://trello.com/
Trello is by far my favorite Agile tool and the one I would recommend when you're working on Agile projects. Why? I hear you ask. Simple, it's free and comes with unlimited users, unlimited boards, unlimited cards, unlimited projects and unlimited teams. And best of all, this tool itself is a great reflection of Agile: simple, easy to use, intuitive, minimalistic and value driven.
Jira: https://www.atlassian.com/software/jira
Jira is one of the most popular Agile tools in the market. It's great and allows for a lot of customization, plus it also includes powerful functionality such as automatic graphs and charts. But it does come at a price. So if you have budget and want Trello on steroids, Jira is a great option. Both Jira and Trello belong to the same company by the way, Atlassian.
Planner: https://products.office.com/business/task-management-software
Planner is Microsoft's version...