Pomo Timer - Beautiful pomodoro timer with pomodoros!
Pomodor - Focus on what matters!
AnotherPomodoro - Free, open-source and fully customizable pomodoro timer web app that focuses on boosting productivity with a clean and debloated design. It is free of ads and pop-ups as well.
PomoGuru - Boost Your Productivity with the Pomodoro Technique
Timing - Timing is the best way to keep track of the time you spend with your Mac.
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar