Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Things - Things is an easy to use task manager.
WorkPatterns - The modern manager's toolkit: 1:1s, feedback, & recognition
Motion Firefox - All-in-one time management tool in Firefox
SlimPlanner - Team scheduling, resource planning, task management
Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.