Lunatask - All-in-one encrypted to-do list, habit and mood tracker, journaling and notes app
Flowlist - A self management tool optimised to aid creative focus
Microsoft To-Do - Task management tool
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Things - Things is an easy to use task manager.
Ulysses.app - A powerful writing tool for Mac, iPad, and iPhone