TextMate, Photoshop CS3, Illustrator CS3, Flash CS3, Transmit
Camino, Safari, Firefox, Opera
All running on Mac OS X, but currently in the process of installing XP through Bootcamp so I can test on IE and PC versions of the other browsers.
Personally I never use WYSIWYG. I suppose it goes back to the good old days in art college when we were told that DW adds a lot of extra code when using design view.
Maybe things have changed over the years but I'm used to coding everything now so I'll be sticking to that