Rhythmyx 6.5.2 looks pretty good in Chrome, Google’s new browser. It requires Java 6.10, though, which has only reached rc status. And Chrome thinks that content editor windows should be blocked - they peek up from below the bottom of the browser and you have to double-click on their title bars to maximize them. Ephox doesn’t seem to work - the window disappears when I click in it, which is also what I get with Firefox 3.0 for Linux.