Dudle - Dudle is an online scheduling application, which is free and open source.
Hotello - Hotello is a SAAS cloud or on premise hospitality management software that manage establishment's day to day operations and customer service.
Pulse 24/7 - Booking & scheduling mobile app for service providers
Maestro PMS - Maestro PMS is a property management solution that allows users to design their hotel management processes according to their needs.
MakePlans - Online appointment booking - MakePlans
Quore - Quore is a hospitality operations solution that streamlines workflows so hotels can improve productivity, communication and guest satisfaction.