Pandoc - Universal markup converter

•    Haskell

Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. Pandoc can read Markdown, CommonMark, PHP Markdown Extra, GitHub-Flavored Markdown, MultiMarkdown, and (subsets of) Textile, reStructuredText, HTML, LaTeX, MediaWiki markup, TWiki markup, TikiWiki markup, Creole 1.0, Haddock markup, OPML, Emacs Org mode, DocBook, JATS, Muse, txt2tags, Vimwiki, EPUB, ODT, and Word docx.

marked - A markdown parser and compiler. Built for speed.

•    HTML

A full-featured markdown parser and compiler, written in JavaScript. Built for speed.String of markdown source to be compiled.

a11y

•    CSS

Pronounced Alix. Because it’s simpler. The whole presentation lives in the wiki. Please note that a substantial work has been accomplished to document the whole project, from the Sass layer to each test explanations through CSS selectors and tricks. I suggest you make a tour on a11y.css documentation website.

marked - A markdown parser and compiler. Built for speed.

•    Javascript

A markdown parser and compiler. Built for speed.

haml - HTML Abstraction Markup Language - A Markup Haiku

•    Ruby

Haml is a templating engine for HTML. It's designed to make it both easier and more pleasant to write HTML documents, by eliminating redundancy, reflecting the underlying structure that the document represents, and providing an elegant syntax that's both powerful and easy to understand.

Pandoc - General Markup Converter

•    Haskell

Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It an convert documents in markdown, reStructuredText, textile, HTML, DocBook, or LaTeX to HTML formats, Word processor formats, PDF and other markup formats.

react-hyperscript - Hyperscript syntax for React.js markup

•    Javascript

Hyperscript syntax for React.js markup. If you're using React 0.11, use react-hyperscript 1.x.x. For later versions, use react-hyperscript 2.x.x.

mark - A simple and unified notation for both object data, like JSON, and markup data, like HTML and XML

•    Javascript

Objective Markup Notation, abbreviated as Mark Notation or just Mark, is a new unified notation for both object and markup data. The notation is a superset of what can be represented by JSON, HTML and XML, but overcomes many limitations these popular data formats, yet still having a very clean syntax and simple data model. The major syntax extension Mark makes to JSON is the introduction of a Mark object. It is a JSON object extended with a type name and a list of content items, similar to element in HTML and XML.

X3DML Project

•    CSharp

X3DML is an xml-based markup language that defines rules for modeling 3D scenes from a tag-based document. It may be usefull in 3D web design and VR.

Ultralight Markup

Ultralight Markup makes it easier for webmasters to allow safe user comments. It features a stripped-down intermediate markup language meant to bridge the gap between text entry and HTML. And the project includes an ASP.NET MVC implementation with a Javascript editor.

Web Markup Minifier

•    ASPNET

The Web Markup Minifier (abbreviated WebMarkupMin) is a .NET library that contains a set of markup minifiers. The objective of this project is to improve the pe

Markup.js - Powerful JavaScript templates

•    Javascript

Markup.js is a simple yet surprisingly powerful template system for JavaScript. Markup.js takes the pain out of converting structured data into HTML markup or other text formats. Its intuitive syntax and small footprint (only 1.9KB minified and gzipped) make it the perfect choice for your JavaScript app. Plus there are no dependencies.

markup.rocks - Pandoc based document editor and converter in your browser.

•    Haskell

markup.rocks is a client-side app that lets you edit, preview and convert between documents written in various markup languages in your browser. Check out markup.rocks on github to view the source code, file issues and contribute.

spec-md - 📖 Additions to Markdown for writing specification documents

•    Javascript

Renders Markdown with some additions into an HTML format commonly used for writing technical specification documents. Markdown additions include code syntax highlighting, edit annotations, and the definition of algorithms and grammar productions.Spec Markdown is first and foremost Markdown. As such, it follows Markdown's philosophy of intending to be as easy to read and easy to write as is feasible.

wiky - A Wiki markup to and from HTML converter written in JavaScript (LGPL)

•    Javascript

A bidirectional Wiki markup to and from HTML converter written in JavaScript.

preact-markup - :zap: Render HTML5 as VDOM, with Components as Custom Elements!

•    Javascript

Render HTML/XML using VDOM, with Custom Elements mapped to Components.

r-dom - React DOM wrapper

•    Javascript

React DOM wrapper.

html2texy - Converts HTML to Texy!

•    PHP

html2texy! is a converter from (X)HTML to the Texy! mark up language. It's implemented as an XSLT template and intended for use from PHP (uses a couple of calls to PHP-specific extensions to XSLT).Texy! is a (yet another) mark up language resembling Markdown, Textila, or reStructuredText.

simple-markdown - JavaScript markdown parsing, made simple

•    Javascript

simple-markdown is a markdown-like parser designed for simplicity and extensibility.Most markdown-like parsers aim for speed or edge case handling. simple-markdown aims for extensibility and simplicity.

textile-js - A fully featured Textile parser in JavaScript

•    Javascript

Attempt at an implementation of fully featured Textile parser in JavaScript that runs reasonably fast and mostly avoids outputting broken HTML. Give it a go in a live textile web editor.