Ask HN: What tools do you use to test/review a website visually?

Specifically I need to test a few informational websites in different browsers and versions. Right now I'm just loading up Chrome / FF / Safari on my mac and reviewing them by hand. However I can't do IE this way, and it's not very efficient.

I recently tried using [VisualDiff](visualdiff.com) but they seem to be more focused on differences between website versions, not simply screenshotting the site in different browsers.