Airbus and Boeing are the two most prominent manufacturers in the commercial aircraft market. Apart from a relatively small number of Embraers and Bombardiers in the regional markets, most commercial airliners are built by either Airbus or Boeing. The two manufacturing giants have what seems to be a healthy rivalry, but it was not always the case. Taking a brief dive into history, we look at how this rivalry has evolved over the years, generally regarding commercial aircraft and where it stands today.