Time 2 - Stay focused and crush procrastination
Cron - Cron Calendar.
Progress Bar OSX - This is your life and it's ending ⏳ one minute at a time
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
Gone - An ephemeral to-do list
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.