1. User friendly scheduling applications

  2. Meetin.gs is the smartest way to meet, online or face-to-face. Get your meetings on the cloud, accessible from any device.

  3. Send a single email to coworkers, clients, or friends and TimeBridge finds a meeting time everyone can make. Automagically.

  4. Xoyondo makes it easy to find a date for your event that works for everybody. You can also create polls and conduct surveys. Xoyondo is free. No registration required.

  5. Plan the time to have your meeting or event by co-ordinating availability with all the particpants using this fuss-free online tool.

  6. x.ai is a personal assistant who schedules meetings for you.

  7. Acuity Scheduling

  8. Smart Calendar Assistant for Gmail | Boomerang Calendar

  9. Organize your schedule and share events with friends without hassle. With Google's free online calendar, it's easy to keep track of life's important events all in one place.

  10. Online reservation system and booking calendar. great software for booking hotels, gites, apartments, houses, villas, tours, appointment, and other multi-room

  11. Connecting the world's calendars

  12. Online appointment booking - MakePlans