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.