XML-Grammar-Fiction is a Perl package that provides processors for lightweight markup languages and corresponding XML grammars for writing prose (e.g. stories, novels, and novellas) as well as screenplays. The XML grammars can in turn be translated to XHTML and DocBook/XML. XML-Grammar-Fiction currently offers only very basic functionality, but has good support for UTF-8 and allows one to write bidirectional texts conveniently. It is still under development and may exhibit some quirks.
Swallowapps provides interactive tools for the design of Web (HTML5) content. You create the visual part of your application using visual tools and get instant feedback while you adjust dimensions, transformation matrices, colors, shadows, gradients, and other styling elements in an intuitive and interactive way. When the time comes for programming, Swallowapps combines the convenience of the commonJS packaging specification (the require() function, package.json, etc.) with an automatic build process. Modify any source module of any package which you use, hit F5 in the browser, and your updated application is reloaded. Swallowapps tools are built with themselves, so as you learn how to use the tools, you also learn how to modify them and make them tightly fit your specific needs.