Lightning (Software)

Lightning is a subproject of the Mozilla Calendar, which deals with the development of a personal information manager software and thus competes with Microsoft Outlook so far leading in this area.

Technical details

Unlike Mozilla Sunbird, which also constitutes a part of the Mozilla Calendar project, Lightning is not intended as a stand-alone software, but aims to improve the integration of a calendar function in the e -mail program Thunderbird to.

Lightning and Sunbird differ slightly in their functionality. Within Lightning, it is also possible to receive event invitations by e -mail and send. Furthermore, can be viewed birthday dates by using the Expand ThunderBirthDay from the address book of Thunderbird Lightning.

Both programs share a common code base, each adjustments to the stand-alone operation are necessary in Sunbird.

"Lightning " is a working title and not an official product name. Hence the name "Mozilla Lightning " is a misnomer.

The software supports 32 - and 64 -bit architectures for eComStation, Windows, Mac OS X and Linux.


The first known pre-release version - Version 0.1 - published on 14 March 2006. Version 0.9 was released on 23 September 2008, with the improved optics and the memory usage has been reduced.

On 12 January 2010 the first beta version of the future version 1.0 has been released. This support for tabbed browsing has been added and the calendar extended so that this can now be seamlessly integrated into the user interface of Thunderbird version 3.0 and also invite well into the SeaMonkey version 2.0. In addition, the support of the calendar CalDAV standards and interoperability has been improved with CalDAV servers. On 29 July 2011, the fifth beta version that can be installed from Thunderbird 3.0 was released. On 26 September 2011, the compatibility with Thunderbird 7 was prepared using the beta version 7.

On 7 November 2011, Version 1.0 was released. This is now completely locally - even without internet connection ( offline ) - function. In addition, the user interface has been redesigned.