Google web toolkit is the best way to develope the ajax(Asynchronous java with xml) based web application also known as ARIA (Advance Rich Internet Application). Google recently launched their development mode browser plugin for all platform. Download plugin based on your browser and platform. Firefox - Win x86, Linux x86/x86_64, Mac x86/PPC Safari - Mac x86/x86_64/PPC Chrome - Win x86, Linux x86/x86_64, Mac x86 Internet explorer - Win x86