Cross browser checker?

Hello,

Instead of downloading and checking my website in multiple browsers, is there a singular program I can download where I can physically view the websites I program?

....Or is the best option to download multiple browsers which are commonly used to open my website in and test?

Best Regards,
Tim

Check http://browsershots.org
Or http://alternativeto.net/software/browsershots/ (haven't used anything here except IETester)