#4 Microsoft

Rank in 2013: 4

Rank in 2012: 3

Rank in 2011: 2

Brand value in 2013: $45.53 Billion

Brand value in 2012: $45.81 Billion

Brand value in 2011: $42.80 Billion

This Redmond based company is in to developing, manufacturing, licensing, and supporting a wide range of products and services related to computing. Recently the company jumped into hardware arena with its range of Surface tablets. Its latest OSs, Windows 8, and Windows Phone 8 are much in demand and have got good reviews.

#3 Google

Rank in 2013: 3

Rank in 2012: 2

Rank in 2011: 1

Brand value in 2013: $52.13 Billion

Brand value in 2012: $47.46 Billion

Brand value in 2011: $44.29 Billion

 The internet giant, Google, has shed a rank from 2011, where it was a most valuable brand, to rank 2^nd and 3^rd in 2012 and 2013 respectively. The company provides Internet-related products and services, including internet search, cloud computing, software and advertising technologies. Advertising revenues from AdWords generate almost all of the company's profits.

With Nexus range of devices, Google Glass and chrome books the company is stepping into hardware territory too.

Also Read: Unknown Facts About 15 Richest Tech Titans and  15 Richest Internet Entrepreneurs Of All Time