15 richest tech titans

Nothing has changed the world as much as information technology. Companies started in a garage or college dorm went on to become the world's biggest businesses.

Here's a list of world's richest tech billionaires, who inspire entrepreneurs and make them believe in their dreams.

Bill Gates

Rank: 1

Net worth: $61 billion

Company: Microsoft (founder)

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Larry Ellison

Rank: 2

Net worth: $36 billion

Company: Oracle (CEO)

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Larry Page and Sergey Brin

Rank: 3 and 4

Net worth: $18.7 billion each

Company: Google (founders of the company)

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Jeff Bezos

Rank: 5

Net worth: $18.4 billion

Company: Amazon (CEO)

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Mark Zuckerberg

Rank: 6

Net worth: $17.5 billion

Company: Facebook (CEO)

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Michael Dell

Rank: 7

Net worth: $15.9 billion

Company: Dell Inc. (founder)

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Azim Premji

Rank: 7 (a tie with Michael Dell)

Net worth: $15.9 billion

Company: Wipro (chairman)

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Steve Ballmer

Rank: 9

Net worth: $15.7 billion

Company: Microsoft (CEO)

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Paul Allen

Rank: 10

Net worth: $14.2 billion

Company: Microsoft (co-founder)

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Robin Li

Rank: 11

Net worth: $10.2 billion

Company: Baidu (co-founder)

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Laurene Powell Jobs

Rank: 12

Net worth: $9 billion

Company: Apple (widow of Steve Jobs)

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James Goodnight

Rank: 13

Net worth: $7.3 billion

Company: SAS (co-founder)

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Hasso Plattner

Rank: 14

Net worth: $7.2 billion

Company: SAP (co-founder)

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Eric Schmidt

Rank: 15

Net worth: $6.9 billion

Company: Google (former CEO)