Who has code completion, CSS classes browser, Javascript function browser, PHP code browser, HTML elements browser, all together in a single interface that covers this multiple array of features in a perfectly usable environment  ?  As far as I’m concerned, the battle between Aptana and Dreamweaver is over : the eclipse extension known as Aptana Studio Community Edition performs incredibly well for me after a few months of learning which plugins are best and where different perspectives stand. The fact that Ajax development is covered does a lot : check out Spket extension, I have tested it in Aptana and it does a great job completing code with available  variables and methods from EXTJS . To be faire, Spket is available for Dreamweaver too.