Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

A prototype is an early, trial version of a product/service made to test and improve ideas before the final version is created. Prototype is a preliminary, often incomplete, version of a product, ...

A submarine-launched drone designed to hunt and destroy undersea mines without putting sailors in harm’s way has cleared a critical development hurdle. According to the Department of Defense’s FY2026 ...

Overair’s first prototype is expected to begin ground and flight testing early next year. Credit: Overair Overair has announced the completion of its first full-scale prototype aircraft, paving the ...