Things - Things is an easy to use task manager.
Planny.co - Planny is lightweight Twitter scheduler. Grow faster with calendar planner, multi account management, advanced drafts and analytics.
Motion Firefox - All-in-one time management tool in Firefox
Day Night - A desktop app that kills the procrastination in you.
Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.
Gone - An ephemeral to-do list