Converter from Markdown to the Gemini text format. It works as a Python module, or a command line application. One of its key features is that it can convert inline links into footnotes. It also supports tables, and will convert them into Unicode (or ASCII) tables. Anything else that it doesn't understand will remain the same as when you wrote it, like strikethrough for example.

I'm considering trying my hand at writing Pelican plugins with this module, so I can set up a Gemini site with my existing blog.

A file based wiki that uses markdown.

Shaarli plugin to easily insert markdown syntax into the Description field when editing a link.

A perverse way to make your HTML look like markdown, purely via CSS.

Use the markdown.css file to make regular HTML look like plain-text markdown. No JavaScript hacks are needed.

CodiMD lets you create real-time collaborative markdown notes on all platforms. Inspired by Hackpad, with more focus on speed and flexibility, and build from HackMD source code. Requires a database on the back-end (MySQL is supported).

Documents describing half-baked ideas and their kin.

Official documentation for Github's version of Markdown text formatting. This can be used in the wiki, in tickets, in comments... it's all in one place.

Pelican is a package which generates a static blog (i.e., it renders the HTML files for your site when you tell it to and that's it). Written in Python. Uses Markdown to format posts prior to rendering into HTML. Comments are implemented with Disqus, so you don't have to fiddle with setting up shared hosting to store comments from readers. Can even import contents of Wordpress or Dotclear installs, or anything that has an RSS feed.

Flatdoc is a single JavaScript file that can fetch arbitrary Markdown documents, render them as HTML, and display them in a web browser. Ideal for project documentation.

MDwiki is a single-page wiki engine implemented as an HTML5 page with JavaScript. Drop a bunch of Markdown documents into a directory, add a copy of mdwiki.html, and you now have a fully functional wiki. You can't edit it with your web browser but it's fine as a mostly static CMS or a documentation site.

An online collaborative editor that uses Markdown natively for hacking code.

python module that converts html into markdown. Can be used programmatically.