...Some features:
* update the diagram while editing
* code assistant to insert ready-made code snipets
* written in Qt4, so it should run on all platforms supported by Qt4 and PlantUML
* option to cache the PlantUML output to speed redo, undo and loading from disk
* can be used as a PlantUML viewer (see the wiki for more info)
(XSLT transformer/editor)
A text editor that allows the loading and editing of an XML document and an XSLT document at the same time. It also can apply the XSLT to the XML and display the output for further editing/saving. Plugable XML and XSLT parsers