Matrix of tested and browser and platform configurations:
Windows XP
Linux(Debian)
MacOS X 10.3
MacOS 9
MSIE 6 OK
MSIE 5.5 SP2
OK
MSIE 5.2
TextArea
MSIE 5.01 SP2 OK (1)
MSIE 5.0
TextArea
Netscape 7.2
OK
Netscape 7.1
OK
Netscape 7.0.2
TextArea
Mozilla 1.8
OK
Mozilla 1.7.3
OK
Mozilla 1.7.2
Mozilla 1.7
OK OK OK
Mozilla 1.6
OK OK
Mozilla 1.5
OK (2) OK (2) OK (2)
Mozilla 1.4.1
OK
Mozilla 1.4
OK
Mozilla 1.3.1
OK
OK (3)
Mozilla 1.3 OK
Firefox 1.0.1
OK
Firefox 1.0
OK
OK
Firefox 0.9
OK OK
Firefox 0.8
OK OK
Firebird 0.7
OK (2) OK (2)
Firebird 0.6
NO NO
Safari 1.2.4
TextArea
OK : Works correctly NO : Doesn't work at all TextArea : No HTML editor, but plain text area
Notes: (1) : Disabled buttons don't get dimmed, this is due to the lack of opacity support in CSS. (2) : Resizing tables seems to be a bit buggy. Seems to be an browser issue. (3) : Cannot resize tables, the table dialog box does work though!
Notice: Only major, stable browsers and those that support the Midas specification are included in the tests. And remember just beacurse your browser isn't included in the list it doesn't mean that TinyMCE isn't working on that browser it's just not verified to work or not work.