There doesn't seem to be much ActiveX-dependency out there, fortunately. Most of the world seems to understand the non-portability of this (which is good, but surprising). In fact, the only ActiveX I've run into is Windows Update and for downloading certain stuff from the MS download site. And, possibly, one ebook site I had some trouble with (never could download what I had paid for, thinking back the symptoms were the same as when you try to download from MS on a non-IE/non-Windows browser).