Google Calendar is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is Nextcloud Calendar, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Google Calendar and 11 are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Google Calendar are Kolab, MIDAS, Feber and Homechart.
Calendar interface for CalDAV enabling cross-device event sync, web-based editing, recurring events, Nextcloud Contacts integration, WebCal subscriptions, attendee invites, color coding, event notifications, privacy-focused hosting, and import/export support.
Almost everyone thinks Nextcloud Calendar is a great Google Calendar alternative.
Kolab provides a FOSS communication & collaboration solution that can be completely self-hosted. Take back control of your data and access it via the webinterface, or existing mobile & desktop clients.
MIDAS is a leading room booking system giving you complete control over your room bookings and resource scheduling, and trusted by organizations and businesses of all shapes and sizes around the world.
A simple, self-hostable group calendar. Feber is a single PHP file (+assets) that runs on virtually every webhost.
Homechart helps you budget, conquer your todo list, plan meals, manage your recipes, and so much more.
Small and medium scale businesses wish to provide online service booking, but tools out there are either too expensive or too complex. Timegrid is a platform holding contractors and customers for letting them an affordable and easy to use way to interact through online...
WebCalendar is a PHP-based calendar application that can be configured as a single-user calendar, a multi-user calendar for groups of users, or as an event calendar viewable by visitors.
If you want self-hosted web-based callendar software for multiple people, WebCalendar is great option! Although, it is not so feature rich and user friendly as Google Calendar is (e.g. adding events across multiple days need to be dane by manually calculating it in hours) and have problems with internationalization (buggy showing of accented letters).
With Planning Pal you can organize the use of shared facilities in your household, student dorm or on your work easily. Reserve times for facilities and enjoy the ease of sharing!.
wtplan (web terminal planner ) helps you manage a calendar. The calendar can be managed from a command line interface and/or a web interface. The calendar data is stored in a simple text file. wtplan integrates with git to make backup and synchronization between multiple...
jquery-calendar - A responsive jquery calendar scheduler built with bootstrap and moment.js
Maian Events is a FREE and easy to use calendar event system. It enables you to easily post your personal or company events online.
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Free (and open source) alternative. Your data is yours !