SEO Content Editor - Write and optimize site’s content based on SERP data
DocBook - DocBook is a schema (available in several languages including RELAX NG, SGML and XML DTDs, and W3C...
ContentPro - Find articles from other companies to optimize your content
Tectonic typesetting - A modernized, complete, standalone TeX/LaTeX engine.
Keyword Surfer - Get search volumes & keyword data directly in Google.
SILE - SILE is a typesetting system inspired by TeX and InDesign, but seeks to be more flexible...