Motion Firefox - All-in-one time management tool in Firefox
Things - Things is an easy to use task manager.
FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Teeny Breaks - Mindfulness tips to make the most of your breaks 🧠💖
Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.
Add to Calendar Link Generator - Create buttons for Google Calendar, Office 365 and Apple Cal