Windows - XML/CSS Tools
Rapid CSS Editor 2011 v.11.1
Quickly and easily create and edit style sheets of any complexity. Write your CSS and (X)HTML code manually or let the program do it for you. In each case it is easy because of many helpful features like Inspector and Auto complete.
ExamXML Pro v.5.10
ExamXML Pro is the best visual XML differencing tool for comparing, editing and merging XML documents and comparing folders. It has a comfortable and intuitive interface both for beginners and advanced users.