Mealy - Stop wasting food and start sharing meals
Cron - Cron Calendar.
Pantry Check - Pantry Check – Grocery List is a free to use mobile application that allows you to track and manage home inventory easily.
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
Kiff - The food expiration tracker for groceries and leftovers
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.