You could be forgiven for thinking that Flash was the only way you can add cool interactive graphs to a website. In this week’s article, Alex shows us just how far this is from the truth, introducing us to the excellent gRaphaël graphing library for JavaScript.

Yahoo’s YUI JavaScript library has a wealth of components that work well together to create impressive user interfaces. In this article, Darrin shows us how easy it is to leverage YUI’s TreeView component, in order to create a dynamic expanding tree control that loads content via Ajax.

In this final installment of his Data Visualization with Flex series, Toby builds on the work from the first two parts to take our visualization to the next level. The final product allows you to visualize how often various tech key words are used on the SitePoint forums, and how they are connected. Even if you’re new to the series, it’s worth having a look to see the visualization in action!

In part I of this series, Toby showed us how to extract a subset of useful information from a truly massive set of raw data: nearly all the posts from the SitePoint forums! In part II, we’ll set about turning that data into a useful visualization, showing how often keywords are used in an impressive, interactive graph.

Adobe’s Flex can be a fantastic tool for visualizing data. In this first installment of a three-part series, Toby gives us some general theory on data visualization, and shows us how to extract meaningful data from an application and import it into Flex.

Testing your web site in all the current versions of Internet Explorer on separate PCs is no one’s idea of fun. In this article, Craig shows step-by-step how to run IE6, IE7, and IE8 simultaneously using Windows 7 XP Mode.

Want your Firefox extension to stand out from the crowd? Wish extensions were as easy to style as web pages? In this article, James shows us how to give an extension that extra bit of flair by mixing HTML right into an XUL document.

Browser support for CSS3 is continually improving. In this article, Alex walks us through a few of the coolest CSS3 properties supported in the latest development release of Firefox (3.6 alpha).

In parts I and II, Andrew showed us how to build a slick-looking Flash frontend for Twitter and Flickr using the beta versions of Flash Catalyst and Flash Builder 4. In this final installment in the series he takes our application a step further by adding video functionality: allowing users to upload videos, and to take screenshots of their videos to post as images.

As a follow-up to his recent ebook, Build Your Own Firefox Extension, James has assembled this selection of useful tips, tricks, and hacks that he's collected from his experience with building extensions for Firefox.