Forest, Super Productivity, Time Out, Focus Keeper, focus booster, Session - Pomodoro Timer, Studyzone, Pomofocus, Fokus-plasmoid for KDE, Pomolectron, YAPA-2, Pomello, Productivity Challenge Timer, Gnome Pomodoro, Tomato 2, Pomodairo, Pomotodo, d:DONE, Timepiece, Pomidorus, Pomobaro, Green Tomates, myAgilePomodoro, Timist are some alternatives to PomoTimer.io.