Browser Download Locations
If you're testing web pages, you need to test on as many browsers as possible. Here's a list of as many browsers as I could find (so far, I haven't investigated Linux yet)).
On Windows, you can install many of these side-by-side for testing purposes - I don't know the situation with Apple Mac browsers.
For MSIE (not listed - go to http://www.microsoft.com/downloads/), you'll need separate PCs for different versions OR visit http://www.quirksmode.org/browsers/multipleie.html to find out how to run multiple versions of MSIE on one computer.
More browser downloads can be found at: http://browsers.evolt.org/ (thanks to Matthew Cook for that tip).
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