Chrome is one of the most stable and secure web browsers, today. And the good thing about Chrome is that it encourage users to give feedbacks and suggestions what should be added or corrected in the browser. Those elements probably served as the backbone that gave Chrome its dominant position in the browser industry these days.
Google launched the Google Chrome Canary for Mac OS that works very similar with the Windows version. Mac users can now test version 13 of Chrome Canary that works along with the more stable Google Chrome 11 and even the Dev and Beta versions. Expect a lot of bugs, crashes and inherent errors with the unstable Google Chrome 13. But of course, all of these are needed to test new and forthcoming features of the browser.