Six tech start-ups that could change the way we live

In the technology world, just because you have a new idea does not mean it will translate to a real company that can produce revenue. These companies have started with a germ of an idea - say, teaching you guitar or helping employees communicate about projects - and created a company that intends to grow quickly and become a major success. We tapped each one to find out how the product works and how the founders plan to keep the start-up momentum going.

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