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Chimera 0.5 has been released, but rather than tell you about it, i'm just going to refer you to the new Chimera Project Page hosted on

Chimera 0.4 has been released! The focus of this release was speed and stability. Go to the installation page to grab it.

New features include:

  • Now using ~/Library/Application Support for profile, not ~/.mozilla
  • Downloading when clicking a link works and shows progress
  • Much greater stability
  • Many, many bugfixes

We now have a branch of the mozilla tree for Chimera. The Chimera tree is a branch of the Mozilla 1.0 release branch. We will not be coming back to the trunk until after Chimera 1.0 is released. This way we can guarantee stability in the layout engine and mozilla tree while we hammer out the rest of the GUI and hone the layout engine patches for ATSUI and plugins.

You can grab nightlies from this ftp subdirectory.

Mozdev is no longer being used for bugs. Bugzilla is now being used for bugs. Do not file bugs in mozdev. File them with Chimera has its own product in bugzilla now. Do not file Chimera bugs on the Mozilla browser product!

I'd encourage people spamming the mailing list to check out the message boards at The board there is well-organized, and I'm reading that now instead of reading the mailing list, so I'm not even going to see anything you post to the mailing list from now on. :)

That's about it. Dave

Hey, Dave here. With all the silly rumors floating around, we figured it's time to get another build out. This build contains new features (from Joe Hewitt and Mike Pinkerton) and some plugin fixes (thanks Patrick!) and crash fixes. Thanks to Brian Ryner for producing a new build with the mega-Chimera patch applied!

The 0.2.8 build is up on For a list of what's new, check out the installation page.

What? You thought we'd forgotten you? Of course not! Chimera 0.2.7 is here.

Chimera 0.2.6 is out. It supports the OS home page and proxy settings. You can also import bookmarks! Get it on the installation page.

Chimera 0.2.5 has been released. This build has greatly improved plugin support. You know the drill.

Chimera 0.2.4 is available for download. This build is not for the faint of heart. If you're brave, click here.

Chimera 0.2.3 is out! This build has working dropdown lists in Web pages, so you're going to want this one! Get it from the installation page. :)

Chimera 0.2.2 will be available at midnight tonight. Get it here.

Chimera 0.2 is ready. Plugins didn't make the train but we do have Quartz rendering and native scrollbars included! You can get Chimera 0.2 here.

Dave here with a progress update on Chimera 0.2. I've received lots of emails asking when Chimera 0.2 is going to be released. The answer is "When it's ready." :)

We are holding Chimera 0.2 for Quartz rendering and plugins. After all, a browser just isn't a browser until you can view the Star Wars Episode II Trailer in all its glory inside your window (and have it surrounded by pretty antialiased text at the same time). :)

We are also working on crashers and stability fixes, as well as adding some of the most requested immediate features at the same time.

We are currently working on version 0.2 of Chimera. It should be coming your way fairly soon.

I received feedback from loyal Omniweb users requesting that I produce numbers using the latest Sneakypeeks rather than 4.1b1. I was told that the latest SP was substantially faster. That is absolutely true. Check out Omniweb's improved numbers in the page load tests here.

I also received feedback from iCab users asking me to run iCab through the page load tests. I should clarify why iCab was left out of the tests. The problem with iCab is that it does not wait until images on a page have loaded before it claims that the page is fully loaded. This means that the numbers that it scores on the test are inaccurate, because they don't include the time for loading images. This is in direct violation of the specified behavior for load handlers, so iCab was disqualified from all tests.

Version 0.1.3 of Chimera is now available for download. It contains support for security (SSL, HTTPS, etc.) as well as support for alerts and user/password prompts, and some more crash fixes. This build is also 5% faster than 0.1.2. :)

You can download it from the installation page.

For the curious, I have posted the results of a browser showdown between the major OS X browsers. The clear speed winner? Chimera, of course! Check out the details here!. Of course all we do is speed right now, so until we're a full-featured browser, take this with a grain of salt. :)

Version 0.12 of Chimera is now available for download. As per your feedback, it is a disk image (and does not use the .pkg installer). You can download it here.

This build of Chimera contains the following improvements over 0.11:

  • Scroll wheel support
  • Support for key events (so you can type/scroll/submit forms etc.)
  • Support for hover feedback and cursor feedback
  • Many crash fixes
  • Improved scrolling speed (yes, ma, we blit now)

Quartz rendering is getting closer to being a reality, but it's not quite there yet. Maybe for 0.2. :)

Enjoy! Feedback/comments are always welcome on the mailing list. This build specifically addresses the top initial complaints about Chimera. Let us know what we're doing wrong (and right), so we can make the best OS X browser out there! :)

Version 0.11 of Chimera is now available for download. For those of you using 0.1, 0.11 is 33% faster! :) You can download this build here.

The tab browser is up and limping in Chimera. We also have our first downloadable build available. You can fetch that here. It really isn't usable yet, but enough people seem to want to play with builds anyway. :)

Bookmarks are online in Chimera. They can be accessed from the bookmarks sidebar panel and from the top-level menu. You can add and delete bookmarks. The status bar is now live and updates when the page loads.

Chimera is coming along quite nicely! We have icons for all of the toolbar buttons (and they're all hooked up). Printing works, and we have cache and global history hooked up.

Everything in the File menu is implemented. This includes the ability to open and close windows, to open files, to open a web location, to work offline and online, and to save Web pages, both in a complete form (including images) or in a simple form (source only).

This is the project page for Chimera, a new project aimed at delivering a best-of-breed browser on the OS X platform. Chimera uses Cocoazilla, a variant of Fizzilla that consists of a UNIX back end wed to a Cocoa front end.

The cross-platform UI will be replaced with native Cocoa widgetry (such as customizable toolbars and a drawer for the sidebar). The plan is to produce only a browser (no other apps!), and to keep the UI as simple and as clean as possible.

Current project contributors include myself ( and Matt Judy ( If you are interested in getting involved, contact one of us! There's plenty of work to go around!

The chimera project can be contacted through the mailing list or the member list.
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