SpatialChat - Virtual space platform to help remote teams collaborate.
Cron - Cron Calendar.
Lunch Together - Free Remote virtual lunch for founders & freelancers
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
Macro.io - A customizable meeting interface, built on top of Zoom
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.