Rainbow is a handy browser based application that uses a node based approach to edit XML. It's very visual which prevents you from making any structural mistakes. There is also a more beefy version called Rainbow Live which allows you to edit your XML data source directly from your server, as well as upload images, set publish options and provide a client log in amongst other things. I like to think of it as a lite CMS. Key features: * Runs in browser * Move, delete, duplicate and rename nodes * Add and remove multiple attributes using a simple dialog box * Avoid writing poorly formed XML * Edit XML files live online * Upload Images and files * Automatically create thumbnails * Admin and User log-ins * Lock and hide elements from user * Define child templates to define your own node type * No backend scripting necessary * Customizable scripts * Doesn't dictate structure of your data/website - you can easily design the CMS to your own needs