Paparazzi is an open-source autopilot system oriented toward inexpensive autonomous aircraft.
[1] Low cost and availability enable hobbyist use in small remotely piloted aircraft.
[1] All hardware and software is open-source and freely available to anyone under the GNU licensing agreement.
[4][5] Paparazzi collaborators share ideas and information using the same MediaWiki software that is used by Wikipedia.
Paparazzi provides for a minimum set of flight sensors:[8] The open-source software suite "contains everything" to let "airborne system fly reliably".