Tasrix - Manage your tasks and monitor your productivity

Motion Firefox - All-in-one time management tool in Firefox

Taskwall - Remote teams and Individuals use Taskwall to stay organized with their projects, tasks, and team in a powerful application that adapts to the individual needs.

Task Muncher - Task Muncher is a cross-platform and web-based application that is designed to organize and keep the track of everything and focus on munching the weekly tasks.

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.