EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
openDAW : openDAW is a next-generation web-based Digital Audio Workstation (DAW) designed to democratize music production and to resurface the process of making...
SQL Fiddle : A tool for easy online testing and sharing of database problems and their solutions.
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.
A better way to conduct remote interviews
WebRTC based video chat + code editor = Awesome interviews
