Alternatives to 1calendar for all platforms with any license

  • Google Calendar icon

    Google Calendar

    With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations...

    Free Web / Cloud Android iPhone Chrome OS Android Tablet iPad ... Sunbird Chrome

  • Apple Calendar icon

    Apple Calendar

    Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for...

    Free Mac iPhone iPad iCloud

  • aCalendar icon

    aCalendar

    Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar: FEATURES *...

    Free Android

  • iRedMail icon

    iRedMail

    A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD...

    Open Source Linux BSD Self-Hosted

  • 30 Boxes icon

    30 Boxes

    30 Boxes is an online calendering tool.

    Free Web / Cloud

  • BusyCal icon

    BusyCal

    Share Calendars on a LAN and sync with Google Calendar. BusyCal combines a beautiful, personal desktop calendar with an award...

    Commercial Mac

  • Yahoo! Calendar icon

    Yahoo! Calendar

    You can view an entire month or focus on a specific date and time. You can also assign colors for different calendars and to-do...

    Free Web / Cloud

  • AnCal icon

    AnCal

    AnCal stores yours appointments, tasks and notes, which you can easily add and edit. You can also set alarms for selected items and...

    Open Source Android

  • Easy Calendar icon

    Easy Calendar

    Experience the ease of use of a weekly calendar in the palm of your hand! Easy Calendar is the new easy way to plan your day. Designed...

    Commercial iPhone

  • Do It Tomorrow icon

    Do It Tomorrow

    'Do It Tomorrow' is a Windows desktop application which helps you to track, organize, reuse, export, print, and summarize your...

    Freemium Windows Android

  • Google Calendar Checker icon

    Google Calendar Checker

    Quickly see the time until your next meeting from any of your calendars. Click on the button to be taken to your calendar. Update: ...

    Free Mac Windows Linux

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1calendar Comments

1calendar is closing down

Comment by jennifermontes
about 1calendar Mar 2012

As of 20 December 2011, 1calendar is discontinuing their service.

Reply

This service works very well with educational institutions ...

Comment by danielgewecke
about 1calendar Jun 2011

This service works very well with educational institutions and automatically updates changes in the school schedule to mobile phones.

Reply