Tasks is free software, licensed under the GNU GPLv3
Tasks.org is compatible with Outlook, Thunderbird, Apple Reminders, and more!
Powerful and flexible
Filters, tags, lists, infinite-depth subtasks, manual sorting. Tasks works with nearly any productivity system!
Extensive options for customizing the look and feel of Tasks
Multiple sync options
Synchronize with Tasks.org, Google Tasks, DAVx⁵, CalDAV, EteSync, or DecSync CC
Use offline, self-host, or setup EteSync for end-to-end encryption. There are no ads and your data is never shared with anyone