exo: exo (libexo extension library) exo: exo: This is libexo, an extension library to Xfce, developed by exo: os-cillation. While Xfce comes with quite a few libraries that are exo: targeted at desktop development, libexo is targeted at application exo: development. It also has some helper applications that are used exo: throughout the entire desktop. exo: exo: exo: exo: