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Mozilla Lightning Project

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license: Open Source
downloads: 1287
size: 5.00 MB
updated: 2015-10-09

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x64 compatible software

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Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird. Since it's an extension, Lightning is tightly integrated with Thunderbird, allowing it to easily perform email-related calendaring tasks.

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Donate to the Calendar Project

Lightning is a popular calendaring, scheduling and task management extension. Mozilla Sunbird® is a cross-platform application that brings Mozilla-style ease-of-use to your calendar.

If you enjoy using our applications (Lightning or Mozilla Sunbird®), please consider making a donation. All donations can be made using a credit card, PayPal account or check. The Mozilla Foundation will use your donation to fund activities related to the Calendar Project*.

* The Mozilla Foundation may use any directed donation for other purposes if the Board of Directors is unable to find suitable activities to fund for a project, if a project becomes inactive or otherwise becomes ineligible to receive funds.


· Help you keep track of your personal schedule
· Subscribe to calendars on the Internet (via HTTP/WebDAV)

Lightning is licensed under the MPL/GPL/LGPL triple license, allowing use of the files under the terms of any one of the Mozilla Public License, the GNU General Public License, or the GNU Lesser General Public License.

User Rating: 3.2 (12 votes)

x64 compatible software
OS: WinXP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64, Windows 8, Windows 8 x64, Linux, Mac OS X
Requirements: Works with Thunderbird 38.0 - 38.*
Mozilla Lightning Project screenshot

Mozilla Lightning Project Reviews

Software: Mozilla Lightning Project 1.9
Reviewed by: CraigA. (Nov 21, 2012)
Review: I'm trying to find a version of Lightning for Earlybird (Win-64 Thunderbird). The "Nightly" Lightning version I found adds an entry to the Earlybird Help menu for locating future Lightning versions when they become available. I'd like to run 64-bit Win64 Lightning in my Vista x64 Ultimate environment (my Notebook computer doesn't have drivers for Windows 7, crippling the installation, so I'm staying with Vista, and 64-bit Vista boots in 1/3 the time as 32-bit). On my Desktop OpenSUSE 12.2 x64 Linux system system I'm running Thunderbird-Lightning with great success... now Vista...

The "placeholder" gives me some joy to see that Win64 is planned for and will someday receive attention. So, I'll keep watching and hoping.
Software: Mozilla Lightning Project 1.0b2
Reviewed by: Vadim Karacharski (Mar 1, 2011)
Review: It's complettely not working with Thunderbird 64-bit for Windows
Software: Mozilla Lightning Project 1.0b2
Reviewed by: Falko (Jan 6, 2011)
Review: 64 bit builds of Lightning 1.0b1 and 1.0b2 are available at:
Software: Mozilla Lightning Project 0.9
Reviewed by: Pauleph (Jan 5, 2011)
Review: Not 64 bit and will not work under the 64 bit test versions of Thunderbird.
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