Price Comparison Sites (online shopping)

Cashback Sites (online shopping)

Airlines

List of all the world's airlines.

Decacorn Startups (companies)

An ongoing list of decacorn companies from all over the world valued at $10B or more.

Programming Contests

List of Organizations hosting programming competitions on a regular basis.

IIT Kanpur Startups

Companies founded/co-founded by IITKians.

Chat Rooms