Lightning (software)

This article is about the Thunderbird calendar extension. For the just-in-time compilation library, see GNU lightning.

Lightning 0.9 running on Thunderbird
Developer(s) Mozilla Foundation / Mozilla Corporation
Initial release 0.1
Stable release (May 31, 2016 (2016-05-31)[1][2]) [±]
Preview release 4.7 Beta 3 (March 30, 2016 (2016-03-30)[3][4]) [±]
Written in C++, XUL, XBL, JavaScript
Operating system Linux, Windows, Mac OS X, others
Available in 50 languages
Type Personal information manager
License MPL 2.0
Website Mozilla Thunderbird - Lightning Calendar — Mozilla

The Lightning project, announced on December 22, 2004, and currently developed by the Mozilla Foundation, produces an extension that adds calendar and scheduling functionality to the Mozilla Thunderbird mail and newsgroup client and SeaMonkey internet suite. Lightning is an iCalendar compatible calendar.

Unlike the discontinued Mozilla Sunbird and Mozilla Calendar extension, Lightning integrates tightly with Thunderbird.[5]

Lightning is available in 32-bit and 64-bit versions for Windows, OS X and Linux, and is installed by default on Thunderbird.


Version 0.9 was the last planned release for Thunderbird 2. A calendar was originally to be fully integrated into Thunderbird 3, but those plans were changed due to concerns with the product's maturity and level of support.[6][7] Lightning 1.0b2 is compatible with Thunderbird 3.1, Lightning 1.0b5 is compatible with Thunderbird 5 and 6, and Lightning 1.0b7 is compatible with Thunderbird 7.[8][9] Lightning 1.0 was released to the public on November 7, 2011. It was released alongside Thunderbird 8.0. Following that, every Thunderbird release has been accompanied by a compatible Lightning point release. Lightning finally started shipping with Thunderbird with version 4.0.

Sun Microsystems contributed significantly to the Lightning Project to provide users with an alternative free and open-source choice to Microsoft Office by combining and Thunderbird with the Lightning Extension.[10] In addition to general bug-fixing, Sun focused on calendar views, team/collaboration features and support for the Sun Java System Calendar Server.[11]

See also


  1. "Lightning :: Versions :: Add-ons for Thunderbird". Retrieved 2016-04-29.
  2. "Calendar Versions - Mozilla | MDN". Retrieved 2016-06-16.
  3. "Lightning :: Versions :: Add-ons for Thunderbird". Retrieved 2016-04-02.
  4. "Calendar Versions - Mozilla | MDN". Retrieved 2016-05-05.
  5. Lightning Project Launched to Provide Calendar Features for Mozilla Thunderbird- MozillaZine - MozillaZine article announcing the Lightning project and its aims.
  6. "Lightning 0.9 Release Notes". September 23, 2008. Retrieved June 22, 2010.
  7. David Ascher (February 18, 2009). "Lightning-in-Thunderbird status update". Retrieved June 22, 2010.
  8. "Lightning 1.0 Beta 2 and Compatibility". June 17, 2010. Retrieved June 22, 2010.
  9. "Lightning :: Add-ons for Thunderbird". July 29, 2011. Retrieved August 3, 2011.
  10. Calendar Weblog
  11. Interview On Mozilla Lightning and
Wikimedia Commons has media related to Lightning (software).
This article is issued from Wikipedia - version of the 7/20/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.