PHP Markdown!

Byword is designed to make writing more enjoyable with Markdown on your Mac, iPhone and iPad.

ReText is a simple text editor for Markdown and reStructuredText documents with syntax highlighting and optional live preview.It is written in Python using Qt libraries, able to run on any platforms (Linux and BSD are officially supported).

TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor control released as Open Source under LGPL by Moxiecode Systems AB. It has the ability to convert HTML TEXTAREA fields or other HTML elements to editor instances. TinyMCE is very easy to integrate into other CMS systems.

CKEditor is an open source WYSIWYG rich text editor and collaboration solution designed to bring common word processor features directly to web pages, simplifying their content creation.

MarkPad is a Text editor for writing in MarkDown-Syntax. It will display the parsed and styled result to the right side of the plain text on the left.

Moeditor - Your all-purpose markdown editor. Built with Electron / Atom Shell .

Marked takes Markdown text–a simple syntax you can learn in minutes–and turns it into beautiful documents for you. It will update a preview as you work (with several high-quality themes to choose from, or design your own), refreshing every time you save. It can even automatically scroll the preview to where you’re currently editing in your document.

This is the simplest and slickest Markdown editor. Just write Markdown and see what it looks like as you type.The Minimalist Markdown Editor also comes with one-click HTML conversion and other discreet gems.

Dillinger is a cloud-enabled, mobile-ready, offline-storage, AngularJS powered HTML5 Markdown editor.

Asciidoctor is a fast text processor and publishing toolchain for converting AsciiDoc content to HTML5, DocBook 5 (or 4.5) and other formats. Asciidoctor is written in Ruby, packaged as a RubyGem and published to RubyGems.org. The gem is also included in several Linux distributions, including Fedora, Debian and Ubuntu. Asciidoctor is open source, hosted on GitHub and released under the MIT license.

Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.

AsciiDoc is a text document format for writing notes, documentation, articles, books, ebooks, slideshows, web pages, man pages and blogs. AsciiDoc files can be translated to many formats including HTML, PDF, EPUB, man page.