Below are the list of Top Ten Tech billionaires in 2012.

1) Bill Gates
Gates is the co-founder and chairman of Microsoft, the world’s biggest software company.
Est. Net Worth: $ 63.4 billion

2) Larry Ellison
The bulk of Ellison’s fortune comes from his 23.5 percent stake in Oracle, the world’s largest database company
Est. Net Worth:$ 40.7 billion

3) Jeff Bezos
Amazon’s founder and chief executive
Est. Net Worth:$ 24.1 billion

4) Larry Page
The majority of Page’s fortune is held in Google, the publicly traded search engine company he co-founded with Sergey Brin in 1998
Est. Net Worth:$ 21.8 billion

5) Sergy Brin
The majority of Brin’s fortune is held in Google, the publicly traded search engine company he co-founded with Larry Page in 1998.
Est. Net Worth:$ 21.6 billion

6) Azim Premji
Premji owns 78 percent of Bangalore-based Wipro, India’s third-largest software exporter
Est. Net Worth:$ 15.8 billion

7) Paul Allen
Allen co-founded Microsoft with Bill Gates in 1975.
Est. Net Worth:$ 14.4 billion

Steve Ballmer
Ballmer became the chief executive officer of Microsoft when Bill Gates stepped down from day-to-day management in January 2000.
Est. Net Worth:$ 14.2 billion

9) Michael Dell
Michael Dell is the founder and chief executive of Dell
Est. Net Worth:$ 13.3 billion

10)Mark Zuckerberg
Zuckerberg is co-founder and chief executive officer of Facebook
Est. Net Worth:$ 12.9 billion

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