Cron - Cron Calendar.
Pack - Makes it simple to find the best roommates.
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
Roomr - Discover great people to live with
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
OurFlat - Groceries, bills, calendar, chores & chat for any household.