EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
Mockingbird : Mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application.
RegExr : RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
YAML Builder : A tool for visual layout development of YAML based CSS layouts
Audio Shop : Your friendly neighborhood script for mangling images or video using audio editing tools.
A better way to conduct remote interviews
WebRTC based video chat + code editor = Awesome interviews
