Motion Firefox - All-in-one time management tool in Firefox
Microsoft To-Do - Task management tool
Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.
Gone - An ephemeral to-do list
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.
KosmoTime - The to do list with super powers