- LaTeX: de facto standard for math-instensive documents
- pdfLaTeX, XeLaTeX, LuaLaTeX: takes over (figures in png, pdf) - use these!
- MS Word: too clicky math support and ugly fonts, but much used
- HTML with MathJax: "full" LaTeX math, but much tagging
- Sphinx: somewhat limited LaTeX math support, but great support for web design, and less tagged than HTML
- reStructuredText: similar to Sphinx, but no math support, transforms to lots of formats (LaTeX, HTML, XML, Word, OpenOffice, ...)
- Markdown: somewhat limited LaTeX math support, but minor tagging, transforms to lots of formats (LaTeX, HTML, XML, Word, OpenOffice, ...)
- IPython notebooks: Markdown code/math, combines Python code, interactivity, and visualization, but requires all code snippets to sync together
- Confluence: Markdown-like input, with limited LaTeX math support, but converted to XML
- MediaWiki: quite good LaTeX math support (cf. Wikipedia/Wikibooks)
- Other wiki formats: no math support, great for collaborative editing
- Wordpress: supports full HTML with LaTeX formulas only
- Google blogger: supports full HTML with MathJax