TicketPeak - Online Ticketing Software
Dudle - Dudle is an online scheduling application, which is free and open source.
Audience View - Audience View is a cloud-based ticketing solution created for the performance arts industry and suitable for both profit and commercial uses.
Pulse 24/7 - Booking & scheduling mobile app for service providers
TicketingHub - Next generation of Ticketing
MakePlans - Online appointment booking - MakePlans