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Mozilla Sunbird, Portable Edition

sunbird.pngyour calendar in your pocket, without a PDA

Mozilla Sunbird™, Portable Edition is the handy Mozilla Sunbird calendar bundled with a Launcher as a portable app, so you can take your schedule and to-do list with you.

DISCONTINUED: Please note that Sunbird is no longer maintained by Mozilla and should not be used in a production or day-to-day environment. is making this final release available as a convenience to existing users and for testing purposes. Users should transition to using Thunderbird with the Lightning extension for their calendar needs. A guide on migrating is available here.

Download Mozilla Sunbird, Portable Edition

Version 1.0b1 Rev 2 for Windows, English
7MB download / 25MB installed (Details)
[Other Languages]

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Mozilla Sunbird, Portable Edition works best with the Platform


Sunbird Portable is a standalone calendaring and task management application built on the same technology as the Firefox web browser. It's easy to use and makes keeping your calendar and tasks up-to-date a breeze. Plus, it leaves no personal information behind on the machine you run it on, so you can take your schedule and to do lists with you wherever you go. Learn more about Mozilla Sunbird...


osi_certified.pngFor help getting up and running, visit Sunbird Portable Support:

Download Details

  • Publisher: (John T. Haller) and Mozilla
  • Date updated: 2014-03-09
  • System Requirements: Windows XP/Vista/7/8/10, Wine on Linux/UNIX
    * for earlier versions of Windows, use version 0.2 Revision 5
  • License: Free / Open Source (Launcher: GPL, Sunbird: MPL)
  • Source Code: Launcher (included), Sunbird
  • MD5 Hash: 4b203dadbc5632c3b0b50e59e8eebcc2
  • Downloads: over 5 million


Many thanks to Gerard Balagué (mai9) for the old code handling extension path rewriting in 0.5 and earlier and tracon for some of the original ideas with his fflaunch launcher. Thanks as well to FlashBanG and all the folks participating in the mozillaZine forum thread for their ideas, suggestions and support.

Mozilla®, Sunbird™ and the Sunbird logo are trademarks of the Mozilla Foundation and are used with permission.