Lightweight text markup CreoleMarkua (by LeanPub)txt2tagsMediaWiki SyntaxDokuWikiVimwikiPodlitereStructuredText AsciiDocAsciiDocAsciiDoc Language ProjectAsciiDoc Language DocumentationAsciiDoc Syntax Quick Reference MarkdownMarkdown - John Gruber, Daring FireballCommonMarkMarkDocGitHub Flavored Markdown SpecThe Markdown Guide