Long ago, before Chrome existed for OS X (so, 2009 ) my browser of choice was Camino . You'll be forgiven if you've never heard of it, it's an open-source project that zero people work on full-time. And it's only available on the Mac. In fact, if you have heard of it, it may be as the other browser Mozilla makes. And its future is now at a crossroads. As the team lays out in a post on their blog , a major change is needed to keep Camino going. Why? Because throughout its existence, the browser has been built using Mozilla's Gecko rendering engine — the one built for Firefox. But now that engine will no longer be embeddable in other browsers — even other Mozilla browsers, like Camino.