Task Managers

Any.do

Freeware

Problems online.
modern, intuitive, easy-on-modern (in the sense that the screen only what you need and all the major).

1. Scheduler.
2. The synchronization between devices.
3. Notes.
4. Subtasks.
5. Comments.
6. Reminders.
7. Work labels.
8. Notifications.
9. Customize repetitive tasks.