Google has open sourced Page Speed, a tool that was being used internally at Google to analyze and optimize web page performance. The performance best practices section of the Page Speed guide lists and discusses various web site performance optimization strategies and is a good read.

Microsoft has released Internet Explorer 8 which claims to be easier, faster and secure. Along with the release of IE 8, Microsoft has also released a white paper that would make good reading for developers and testing professionals.

Mozilla has announced the beta release of Firefox Mobile Browser, code named Fennec. Amongst the highlights of this release is the inclusion of  TraceMonkey, Mozilla’s new JavaScript engine, which is said to greatly improve browser performance.