Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Streaks - The to-do list that helps you form good habits.
Social Pomodoro - Meet an accountability buddy for 25 minutes of focused work.
Taskful - Deadlines, meet your match.
Flow - Stop managing projects from your inbox.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.