Dudle - Dudle is an online scheduling application, which is free and open source.
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!
Pulse 24/7 - Booking & scheduling mobile app for service providers
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
MakePlans - Online appointment booking - MakePlans
ITSCircle POS - ITSCircle POS is a point of sale solution for retail stores.