Tango Project

The Tango Desktop Project was an open-source initiative to create a set of design guidelines and to provide a consistent user experience for applications on desktop environments. The project created a set of icons known as the Tango Icon Library and that were described as a "proof of concept". The Tango Desktop Project was a project of freedesktop.org, and was closely linked with other freedesktop.org guidelines, such as the Standard Icon Theming Specification.