As Aircraft design evolved, the search for more power, longer Flight and better Aircraft performance led to Multi-Engine Aircrafts format. If one engine was good, two or more must be better. It was that enthusiasm for performance and power that ultimately allowed Simple machines such as the Wright Flier to evolve into the airliners that begin stitching the world together. Rapidly progressing Aircraft Technology walked hand-in-hand with Light weight Aircraft Engine Technology making possible Aircraft that were increasingly fast and more powerful. The Technological frontier was to find new ways to utilize the Airplane. Then the goal became more people, more Cargo, and greater distances.
Major manufacturers of Turboprops are Cessna, Piper, Hawker Beechcraft, Vulcanair Examples: King Air C90, King Air B200, Piaggio P-180, Dornier 228 etc