... a full set of development tools, but currently several development projects help with part of the application creation process. These tools don't make up a full-featured development environment, ... platform becomes much easier and Mozilla fulfills its promise as a rich application development framework. Development tools are important, though, and platforms like Mozilla can't obtain ... XUL, CSS, XBL, and DTD files) need to be built by hand since no complete ready-made development tools or development applications are available that would make these manual processes easier....