Mozilla Calendar

Welcome to the Calendar Project. This is the home of

• the Sunbird calendar application
• the Lightning integrated calendar and
• the Calendar extension

We are striving to build cross-platform fully standards-based calendar client applications based on the open iCal standard. Our applications are built using the XUL user interface language

Sunbird vs. Lightning vs. Calendar Extension

• Sunbird is our standalone calendar application. It doesn't need another client application to run at the cost of a larger download and higher memory requirements. Because of its standalone nature, Sunbird does not offer any kind of tight integration with an e-mail application, such as Mozilla Thunderbird.
• Lightning is a calendar extension for Mozilla Thunderbird. It offers calendaring features directly in the Thunderbird User Interface. Further integration features, such as e-mail invites or addressbook integration are planned for future releases.
• The Calendar Extension is a calendaring extension for Mozilla Thunderbird and Mozilla Firefox. It offers most of the calendaring features of Sunbird and Lightning, but lacks the tight integration of Lightning into the e-mail application.
  Due to resource constraints, the Calendar extension is currently in maintenance mode, which means, that the Calendar Project will issue no new builds and will not actively develop the Calendar extension further.

Latest News

The Calendar Project development team keeps a development weblog. It is intended for everyone who is looking for in-depth, up-to-date information about current events in development.

 

Thursday, May 11th, 2006:

The Sunbird team is proud to announce the completion of Sunbird 0.3 alpha2 for Windows, Linux and Mac OS X. This is a major milestone on the road to the final Sunbird 0.3 release. Thanks go to all developers, testers and other supporters of the project.

Detailed release notes (about improvements, bugs, etc) can be found at the Sunbird 0.3 alpha2 release notes page.

We would like to emphasize the fact that while Sunbird 0.3 alpha2 has seen lots of improvements over Sunbird 0.3 alpha1, we do not consider it to be a production-quality release. It is pre-release software and should be treated as such. This means that this release may contain serious bugs leading to application crashes, dataloss or other unforeseen consequences.

You can find builds for the different platforms on our download page.
Localized builds are also available.