Dudle - Dudle is an online scheduling application, which is free and open source.
rezStream - rezStream is a hotel reservation software for your small to the mid-sized hotel that helps you grow your business and save time.
Pulse 24/7 - Booking & scheduling mobile app for service providers
Agilysys Stay - Property management software for the hospitality industry
MakePlans - Online appointment booking - MakePlans
SkyTouch Hotel OS - Hospitality property management