Please do a little research on your own--Google, Bing, Yahoo, etc.
Information you find on a web site will be much more thorough than
whatever someone here tells you from his memory.
Your question is too big to be answered here. Perhaps you could narrow the
scope of the question.
Perhaps you only want to know the differences in hackability of the three
versions of IE, or their differences in scriptability, or differences in how
they handle international character sets, or ???
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