tools for authoring editing XML in text form

Bag of new tools for editing XML in simple text form. XML has become more popular as authoring format, and it brings with it the frustrating choice between typing tags ad nauseum, or adopting XML GUIs that may be too expensive, too buggy or too proprietary for preference. Numerous systems, formats and tools have sprung up to provide useful authoring formats for XML. [xmlhack]

Someone is also using Wiki to produce DocBook format stuff for the Linux Documentation Project.