84 words
I scored lower on my first attempt, because I didn't quite understand how it worked - when you finish the line, you have to press the space bar to get your next line of words, and this process keeps going until your minute is up.
Anyway, it's a bit lower than I'd thought (I'd expected to be over 100 wpm), but I can live with that. I did this test using the Dvorak keyboard layout on a Microsoft natural keyboard (split in the middle).