1. 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.

  2. A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

  3. Keep track of your busy schedule and share it with others using Calendar.

  4. TAPIRapps. aCalendar and aCalendar+ for Android. The fastest Android calendar.

  5. J

    Schedule books must be practical and has a good design.

  6. 30 Boxes is almost certainly the easiest way to maintain your calendar and share all or parts of it with friends.

  7. Hub Planner gives you resource scheduling, time tracking, timesheets, project planning and reports all under the one service. The worlds best planning tool