Asciidoctor – A fast, open-source text processor and publishing toolchain
There are so many markup languages and conversion possibilities, just have a look on the to-from option from pandoc.Personally, I prefer reStructuredText, its design feels more  consistent in comparison to the ambiguous implementations of  the various markdown dialects.In Asciidoc, I do not like that lower lever headings occupy more markers than higher level ones. Visually,=== This headingappears more important than== This headingBy the way, a good comparison is at http://hyperpolyglot.org/lightweight-markup