The Lightning Project is a redesign of the Mozilla Calendar component. Its goal is to tightly integrate calendar functionality (scheduling, tasks, etc.) into Mozilla Thunderbird.
Some of our future goals are (none of this is implemented right now):
The SeaMonkey project is a community effort to continue the Mozilla browser suite, now that the full official browser suite has been deprecated in favor of Firefox and a distributed set of applications, like Thunderbird.
The Sunbird Project is a redesign of the Mozilla Calendar component. It is currently in Alpha.
Sunbird’s sister project at Mozilla is Lightning, a project to build a Thunderbird calendar extension.
Sunbird is designed to interact with other Mozilla projects via the Lightning extension.
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calendar
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License:GPL
License:LGPL
License:MPL
Firefox is the most popular open source web browser in the world.
Firefox is based on Mozilla’s Gecko rendering engine and is available on many platforms, including OSX, Windows and Linux.
Firefox’s strength lies in a clean and simple interface with a simple but useful feature set, such as popup blocking, password saving, and tabbed browsing. Additionally, Firefox has the largest 3rd party plugin community, with hundreds of useful extensions available.