Zoho Sprints is a free online tool for agile planning and tracking. It allows you to create user stories, add estimation points, schedule agile meetings, and use timesheets to track work hours.
Priooo is a project management software that is a scrum tool that joins the worlds of agility and predictability for development teams, product owners, and management.
GitKraken is a project management tool for Scrum teams. Manage user stories, defects, support tickets, and get a real-time snapshot of your progress to ship your project on time.