DocBook - DocBook is a schema (available in several languages including RELAX NG, SGML and XML DTDs, and W3C...
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Groff - The groff (GNU troff) software is a typesetting package which reads plain text mixed with...
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
pandoc - Pandoc is a Haskell library for converting from one markup format to another, and a command-line...
LyX - LyX is a document processor.