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The Sunbird Project is a redesign of the Mozilla Calendar component. Our goal is to produce a cross platform standalone calendar application based on Mozilla's XUL user interface language. At the moment the "Sunbird" name is a project name. It is not official and may change in the future.

Our intended user is someone who uses Mozilla Firefox and Mozilla Thunderbird and wants a calendar application based on Mozilla.

In addition, by focusing solely on standalone calendar, we believe we can make some dents in the overall footprint and performance of the calendar application by removing components and chrome more...

What's New

Version 1.0b1:
  • You can now define multiple alarms for a single event
  • CalDAV support and interoperability with various CalDAV servers have been improved
  • The application stability, performance and memory consumption have been improved


Mac OS X 10.2 or later

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Sunbird User Discussion

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Cocoanut Member IconComment+209

I like it but it is missing a critical feature that will prevent me and many others from using it....iPhone integration, especially with tasks. Numbered are the days of monolithic info management applications that only work on one platform. If iPhone and other mobile integration is missing it's completely useless to me.

I suggest a Sunbird iPhone client that bypasses Apples horrible sync technology to offer a truly integrated solution offering contact, calendar, task and note syncing.

Reply0 replies
Version 1.0b1
FLASH1296 Member IconReview+297

I do not see how this is preferable to iCal.
It is rather confusing I M O.
The learning curve for a calendar ought to be shallow and short.

Reply1 reply
Version 0.9
Nick Collingridge

It's cross-platform, like Firefox. That's its main USP, and there are many situations in which it makes Sunbird (or Lightning, the Thunderbird plugin equivalent) very desirable.

dnem41 Member IconComment+30

Is this still being worked on for the Mac community?

Reply0 replies
Version 0.8
hairypsalm Member IconComment+1

Have to say I really like this layout and would gladly use it instead of iCal.

The reason I went looking for an iCal replacement was due to the Info Drawer being removed from iCal 3.0...just couldn't live with all those clicks to get to an event's details. Drove me nuts.

I installed 0.7 on a Macbook Pro (Leopard 10.5.0) and it seems to be consuming a lot of CPU. Over 100% at times according to Activity Monitor.

I'm using the plug-in called Provider for Google Calendar 0.3.1 so maybe that has something to do with it, not sure.

Keep up the good work. I'm anxiously awaiting the next update!

Reply0 replies
Version 0.7
Cortland Member IconComment+14

It crashes when launching on my 10.3.9 G4.

Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000064

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Version 0.3.1
warmlogic Member IconComment+30

There's a new version available (0.3): http://www.mozilla.org/projects/calendar/sunbird/download.html

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Version 0.3a2
Anonymous Member IconReview

As always, I think it's great that the Mozilla team is remembering the Mac "five percenters" with every project. While Sunbird is clearly not ready to compete with iCal at the 0.2 stage, I can see its potential, and the interface alone is worth shouting about.

If anything, all of us who use Macs at home but are forced to use PCs at work can get excellent alternatives to MS's crap browser (Firefox ROCKS on a PC), Outlook (Thunderbird's great if you don't have to network your mail folders) and now, with Sunbird, whatever the schedule program is that comes with office. Keep up the magnificent work, Mozillans!

No problems with opening Sunbird here, but as I said, it's just a concept demo right now and shouldn't be expected to run alongside iCal.

Looking forward to 1.0. . . .

Reply0 replies
Version 0.2
Anonymous Member IconReview

its as unstable as the 0.1 version, it opens and then quits, i've tried opening it dozens of times.

Reply0 replies
Version 0.2
Anonymous Member IconReview

Good for testing and getting the hang of, but do not import an existing calendar which has lots of events/alarms/etc. Sunbird will choke.

Great start...oughta be a fine product by 1.0 stage.

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Version 0.2
Anonymous Member IconReview

Does it import iCab and Outlook files?

Reply0 replies
Version 0.2b
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> 4 3


Current Version (1.x)


Downloads 9,237
Version Downloads 2,813
License Free
Date 31 Mar 2010
Platform OS X / PPC 32 / Intel 32
Price Free
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