An auxiliary app is a type of application that serves as a supplement to a main application or program. The term "auxiliary" refers to something that provides additional support or assistance. There are different types of auxiliary apps, including those that manage external applications, those that provide safety features, and those that are designed for specific professions or hobbies. For example, the Auxiliary Applications command on the Tools menu is used to manage Creo TOOLKIT and J-Link applications. The AUXS Safety App S2 and AUXS Safety App S1 are safety apps developed by the Auxiliary Services Organization. Aux.app is a non-commercial music player for desktop computers and the browser that lets you play music and videos from popular streaming providers like SoundCloud, YouTube, Mixcloud, and Deezer all in one player. The American Legion Auxiliary is an organization that administers hundreds of volunteer programs, gives tens of thousands of hours to its communities and to veterans, and raises millions of dollars to support its own programs, as well as other worthwhile charities familiar to Americans.