Concerto is an open-source digital signage system. Moderators approve content submitted by users, such as images, video and text, and the approved content appears in feeds on screens running the Concerto player. Screens use templates with content fields, and feeds can be public or private. Concerto 3 is a rewrite of Concerto 2 aimed at long-term support; release candidates were published in 2026.
The project traces back to the first installation in the lobby of the Lally School of Management at Rensselaer Polytechnic Institute in the United States. It is maintained by the Concerto Project and licensed under Apache-2.0, with no controlling company. Concerto is self-hosted: Docker is the recommended installation method, and the storage volume holds the SQLite database, queue and uploads. There is no vendor-operated hosting, so the organisation decides where data is stored and who operates the system.