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15 companies that will change the world

These game-changing startups are likely to upend existing industries - and spawn new entrepreneurial opportunities.

Expensr's Child and Gupta figure that a free financial Web app - and some social smarts - can save you a lot of money.
CEO: Reman Child and Shawn Gupta (founders)
Disruption: Simple, straightforward financial planning
Disrupted: Today, makers of personal finance software. Tomorrow, the credit industry

Combine the utility of software like Quicken with the social power of Web 2.0, and you have Expensr - a free online service that tracks your budget and spending habits, then shows you how you're doing compared to your peers. "That's the idea behind the social network," says co-founder Shawn Gupta, "to help you do better by making you aware of what other people like you are doing."






Virgin Charter


Bloom Energy



A123 Systems

Renewable Energy Group

Desktop Factory


One laptop per child
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