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Open-source, low-cost 10.5 GHz PLFM phased array RADAR system

ArduPilot is the most advanced, full-featured, and reliable open source autopilot software available. It has been under development since 2010 by a diverse team of professional engineers, computer scientists, and community contributors.

PX4 is an open-source autopilot stack for drones and unmanned vehicles. It supports multirotors, fixed-wing, VTOL, rovers, and many more experimental platforms from racing quads to industrial survey aircraft. It runs on NuttX, Linux, and macOS.

Betaflight is flight controller software (firmware) used to fly multi-rotor craft and fixed wing craft. Betaflight focuses on flight performance, leading-edge feature additions, and wide target support.

Copper is an operating system for robots - build, run, and replay your entire robot deterministically.