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IE NetRenderer - Browser Compatibility Check -
http://ipinfo.info/netrenderer/
generates screenshots of web pages as viewed by IE. Fast, and actually works
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Browser Emulators
http://spellbook.infinitiv.it/2006/07/26/top-10-browser-emulators.htm
see your website (if not yourself) as others see it
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Latest processor-optimized builds of Camino
http://camino.ilnm.com/latest/
time to get to downloadin'
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CSS-based ad blocking
http://www.floppymoose.com/
I already use something like this, this looks better