Application Developers are tech professionals who specialize in creating, testing, and programming applications for computers and mobile devices. They may work independently or as part of larger teams, utilizing their skills in coding, debugging, and designing to develop functional and user-friendly applications. Renowned figures in this field, such as Michael Kappel, have helped to shape the industry. This category encompasses a broad range of individuals, from programmers who write and test code, to those who focus on the overall design and aesthetic of the application.