AsciiDoc is a lightweight markup language for writing notes, documentation, articles, books, ebooks, slideshows, web pages, man pages and blogs. It is a plain text human readable/writable document format. Read more
Geometry Description Markup Language
GDML is a markup language specifically designed for geometric data exchange, primarily written with physics in mind. It consists of a language schema, means of manipulating the geometric data, and I/O.
Koala Bean Markup language enables to serialize/deserialize JavaBeans to/from XML documents.
allows developers to rapidly generate graphical user interfaces by writing XML documents that define the layout and content of the interfaces
Markdown is a lightweight markup language. It allows individuals "to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML)". Markdown?s syntax is intended to be used as a format for writing for the web. Whereas HTML is a publishing format, Markdown is a writing format. Read more
MultiMarkdown (MMD) is a lightweight markup language that is based on Markdown. This tool turns minimally marked-up plain text into well formatted documents, including HTML, PDF (using LaTeX), OPML, or OpenDocument (specifically, Flat OpenDocument or '.fodt', which can in turn be converted into RTF, Microsoft Word, or virtually any other word-processing format). Read more
Polymorphic XML Parser: a validating XML parser for the programming language Objective Caml
Restless is yet-another lightweight markup processor; it generates HTML from plain text with non-intrusive markup of headings, bullet lists, and so on. But unlike other such tools, restless aims to do less: it does not use cryptic punctuation to control advanced formatting, and instead uses heuristics to classify, for example, code samples versus text. It can be used from the command line or on-demand as an Apache filter.
reStructuredText (often abbreviated as reST) is an easy-to-read, what-you-see-is-what-you-get plaintext markup syntax and parser system. It is useful for in-line program documentation (such as Python docstrings), for quickly creating simple web pages, and for standalone documents. Read more
Textile is a lightweight and simple markup language billed as a "humane web text generator". Read more
Texy a text-to-XHTML formatter and converter library that allows you to write< structured documents without knowledge of or using the HTML language. You write documents in easy-to-read plain text format and Texy converts it to structurally and valid (X)HTML code. No knowledge of HTML is required. Read more
Twilight Minds Markup Language: a subset (or variant) of XML that can be used in conjunction with the TwilightMinds.TMML package to parse or process data more rapidly than a W3C-complient parser can work with the same data in XML form
Tome is a markup language and associated tool suite released under an open source license intended for authors, primarily authors of novels and other relatively simple "chapter books". It is a command line tool. Tome documents are written as plain text files. You can use whatever plaintext editor you wish. Read more
WOPR is a simple markup language for creating rich terminal reports, presentations and infographics.