Tomato Timer - TomatoTimer is a flexible and easy to use online Pomodoro Technique Timer
Pomotroid - Beautiful Desktop Cross-Platform Pomodoro Timer, powered by Electron
focus booster - focus booster is a simple timer application following the 'Pomodoro technique' for time...
PomoPlanner - PomoPlanner.app is a pomodoro-based daily planner webapp that allows you to plan and track your main daily tasks, mini-tasks, physical exercise but also to take notes on things you're grateful about, things you've learned and more!
YAPA - Pomodoro timer
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.