Square - Square helps millions of sellers run their business-from secure credit card processing to point of sale solutions. Get paid faster with Square. Sign up today!
Cron - Cron Calendar.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
ITSCircle POS - ITSCircle POS is a point of sale solution for retail stores.
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.