Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Social Pomodoro - Meet an accountability buddy for 25 minutes of focused work.
TaskPaper - Plain text to-do lists for Mac
Pomodoro Timer UWP - Be more productive with your time
TickTick - TickTickis a cross-platform to-do list app & task manager helps you to get all things done and make life well organized.