Mac users looking for a browser that isn't Safari (which to me always feels as though it's made with the heaviest of metals, and thus somehow unwieldy to work with) and isn't Firefox should certainly look at Camino, which you could probably class as YAMO (Yet Another Mozilla Offshoot).
Today it has just hit 1.0 status, as its head developer Mike Pinkerton blogs in Sucking less, on a budget: 1.0 Has Arrived!
I'm posting this with Camino 1.0 final. The website has been updated. The press release has been issued. Today is the day that we take that step from obscure open source project to real, non-alpha, non-beta, feel-safe-to-tell-your-mom-about-it project.
There are so many people I'd like to thank who made this all a reality. Some have only been with the project for a short time, others have been with it since almost the very beginning. Some contribute by submitting bugs, others contribute their time to help us figure out which bugs are real and how important they are. Some contribute artistic talent, others contribute code and bugfixes. Some contribute just by telling their friends about this cool alternative to Safari and Firefox. Everyone in the community shares my gratitude for making Camino what it is today.
There's an interview with and by Om Malik; plus the promise that RSS detection, which is really what Safari and Firefox have that Camino lacks (though if you're at all into Applescript, it has what they lack), will come in a future version. Perhaps we'll reach a sort of browser nirvana where they all have exactly the same features. Now that would be a thing.