Airbus is by far Boeing's biggest arch rival, and has been for several years. Other less worrying competition does also exist, though: Sukhoi (Chinese), Embraer (Brazil) and Bombardier all compete will Boeing in certain niche markets. One of Boeing's big rivals in relation to their military activities is BAE Systems (UK).
Airbus (Europe) is Boeing's biggest competitor.
They also compete with Bombardier, EADS, Orbital, SpaceX, Caterpillar & Embraer and many other companies across the different segments they operate in.
You can see more information about Boeing's competitors and their other business relationships (suppliers, partners etc) at Spiderbook
Here's a direct link to their competitors.... http://spiderbook.com/company/17272/?relationship=competitor
Boeing is the founder of Boeing corporation.
Boeing Boeing - 1985 is rated/received certificates of: India:U
The Boeing 747 is manufactured by Boeing Commercial Airplanes.
Boeing is an aircraft company formed by William Boeing
The Boeing Company runs the various divisions of Boeing.
Boeing 777
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Boeing 747 is easily the largest. The "Boeing 900" you refer to is probably the Boeing 737-900 series, which is a short-medium ranged airplane.
Boeing Boeing - 1978 TV is rated/received certificates of: Netherlands:AL
Boeing is a main aircraft company, so Boeing flight must be the flight of a plane made by Boeing.
The Boeing B-17 Flying Fortress is an American four-engine heavy bomber aircraft developed for the U.S. Army Air Corps (USAAC). Competing against Douglas and Martin for a contract to build 200 bombers, the Boeing entry outperformed both the other competitors and more than met the Air Corps' expectations.
Boeing