fuddl

AntennaPod

A podcast manager for Android

player

Almost certainly the first MP3 player of it's kind.

Vulcan

minimalbox.js

SublimeMarkdownBuild

This is a Sublime Text plugin for building markdown into html and view it in browser.

compass

Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain.

EpicEditor

EpicEditor is an embeddable JavaScript Markdown editor with split fullscreen editing, live previewing, automatic draft saving, offline support, and more. For developers, it offers a robust API, can be easily themed, and allows you to swap out the bundled Markdown parser with anything you throw at it.

Respond

A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)

polyClip

A JavaScript library that allows cropping of images using non-rectangular shapes.

menu_item_image

markengine

Simple Markdown-based Website Engine

markdown-editor

A Drupal 7 based editor for markdown syntax. Very basic. More intended to be a prove of concept.