People who create new inventions, usually technical tools such as mechanical, electronic or software tools or methods are called an inventor. Although the inventor can also be a scientist, but usually the inventor finds something based on various knowledge from other scientists, experimenting with practical applications and combinations of these various knowledge, and by developing and combining existing tools, to create useful new tools.

A patent system is set to encourage inventors, by giving a limited monopoly for discoveries that are considered quite new. Recently it has been seen that this system is often misused, especially in the US, and some people demand a revamp, or even the abolition of the patent system. In the US, patents are from the Constitution, so the inventor will continue to protect his invention in this way for a long time.

The "Biography of the World Inventor" application contains information on a list of figures who find or create tools that are beneficial to human life.