Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Mater - This is a minimal menubar Pomodoro app written in Electron.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
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!
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.