Arrangr - A simple, fast way to arrange a meeting
Pulse 24/7 - Booking & scheduling mobile app for service providers
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
MakePlans - Online appointment booking - MakePlans
Navigator - The Teamwork assistant — run great meetings without busywork
Appointment Booking Calendar - With the Appointment Booking Calendar you can accept online bookings from a set of available time-slots in the calendar.