Activity is a simple and effective activity task manager.
Create a task is pretty simple and can be done also on the menu bar for a quick entry over the applications.

some Features

- Filter By Date, Today, Starred, Upcoming, overdue.
- Favorite Tasks
- Organize your task in groups
- Use custom colors on Groups
- Archive Groups
- Multiple Activity List
- Multiple Versions of List
- Autosave on any editing and roll back to avoid mistake.