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!

Open File and Open Location now work. Unlike current builds of Mozilla, the Open File dialog does work when no windows are open, and it filters out unavailable types.
The initial checkin of Chimera has landed! A functional URL bar and back/forward/reload/stop are now all working in the app. A rudimentary sidebar has also landed.