Once again, the Windows 7 scores all dwarf the OS X scores. Chrome remains the leader on Windows, followed by Firefox. About 200 points behind Firefox is Opera in third place, followed by last-place finisher IE9.
Chrome takes the lead in both operating systems, followed by Safari on OS X and Firefox on Windows 7. Firefox snatches third place on OS X, while Opera takes third on Windows and fourth on OS X.
(The nice popular ones like ABP, Lazarus, Greasemonkey all have equivalents; some lesser-used plugins like Rikaichan also have ports by now. Only a matter of time!)
as always, a great read.
Testing these browsers at stock doesn't reveal even an eighth of the picture.