EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
Doodle : Doodle radically simplifies the process of scheduling events, whether they’re board or team meetings, dinners with friends, reunions, weekend trips, o...
SQL Fiddle : A tool for easy online testing and sharing of database problems and their solutions.
Diagramo : Diagramo is an online flowchart software.
RegExr : RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
A better way to conduct remote interviews
WebRTC based video chat + code editor = Awesome interviews
