If you’re a web designer, then you’ve experienced the surprise and frustration of completing a site only to find that it works on one browser but not on another. While this is mostly an issue with Internet Explorer 6 and older, there is still a need to make sure that your websites are cross compatible. Here are a couple of tools I used during development to check to see if a design and the style sheet are working on multiple browsers and operating systems. Good tools to add to your arsenal. Both are free.