Codassium : A better way to conduct remote interviews
WebRTC based video chat + code editor = Awesome interviews
Feed43 : Your favorite site doesn't provide news feeds?
This free online service converts any web page to an RSS feed on the fly.
MUTE : Web-based text editing tool that allows to edit documents collaboratively in real-time. It implements a CRDT-based consistency maintenance algorithm f...
Query Mongo : Convert MySQL Queries to MongoDB Syntax
SQL Fiddle : A tool for easy online testing and sharing of database problems and their solutions.
Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js