The Falcon Vertigo Hybrid VTOL is a quadplane VTOL aircraft that has been designed to work with PX4 and the Dropix (Pixhawk compatible) flight controller. It can carry a small GoPro camera.
The RTF kit contains everything needed for a full system except an RC receiver and telemetry module.
The source code of PX4 Flight Stack and Middleware are licensed under a permissive 3-clause BSD. For details see this licensing page.