Are the PUT, DELETE, HEAD, etc methods available in most web browsers?

Question

I\'ve seen a couple questions around here like How to debug RESTful services, which mentions:

Unfortunately that same browser won\'t allow me to test

Answer 1

Just to add - Safari 2 and earlier definitely didn't support PUT and DELETE. I get the impression 3 did, but I don't have it around to test anymore. Safari 4 definitely does support PUT and DELETE.