Alot of the smaller countries in the war were still employing biplanes. And the Brits had the Gladiator, Germany had the Hs 123, Russia had the I-15 family, and I'm not sure but America may have still had a few F3Fs in service when the war started.
I've been giving some more thought to this and think that the CR.42 Falco deserves a second look. From what I have seen, it was faster than either the Gladiator or the I-153 and may have been the best biplane fighter of the war. Ah, at last an Italian plane takes a title.
welcome to the site SKIBC, and you're right in saying that, i believe i've mentioned that before, the general feeling in thsi thread is that the title of best bi-plane fighter was the Glostor Gladiator..............................