FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Pomotodo - Todo-list based on Pomodoro technique.
Ambiently - White Noise to help you concentrate, focus & relax
wnr - Better than pomodoro, this timer app balances work and rest.
Pomodus - A Pomodoro app that is integrated with Slack so that you can focus without Slack or your colleagues interrupting you. It silences your notifications, let's colleagues know that you're busy & when you'll be done. View stats & export your history.