Username or EmailPassword
I prefer Docbook or Openoffice (strange choice). The lattersīs formula editor uses TeX notation, which is brilliant for Copy & Pasting dozens of formulas. Openoffice lets you work in a very TeX-ish way, using centralized style definitions etc.
Moreover I donīt like TeXīs implicitness of a DOM: XML is much better to work with programaticly. Of course that means you need decent tool support (That shortens the typing of Tags - but e.g. Stylus Studio will do that).
Unfortunetly TeX works better than OS XSL-FO (afaik).