Where can I find HTML5 specifications and details about which browsers support which features?

Question

I was wondering where can I find HTML5 specifications for Internet Explorer, Opera, Firefox and Google Chrome browsers?

Answer 1

Fresh presses (6 days ago since this post):

Draft Editor 25 January 2011
http://dev.w3.org/html5/spec/Overview.html

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Answer 2

: http://caniuse.com/

Answer 3

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Answer 4

http://en.wikipedia.org/wiki/Comparison_of_layout_engines_ (HTML5)

Answer 5

modernizr , , .

Alternatively, if all you need is a comparison of different browsers, you can browse your homepage in your browser at your discretion to find out what it supports.