Flight Dynamics and Control Toolbox
An open-source Matlab/Simulink toolbox for flight simulation, aircraft dynamics analysis and flight control system design. Includes a detailed simulation model of the Beaver aircraft and autopilot, plus documentation.
http://www.dutchroll.com/

Flight Dynamics and Control Toolbox
An open-source Matlab/Simulink toolbox for flight simulation, aircraft dynamics analysis and flight control system design. Includes a detailed simulation model of the Beaver aircraft and autopilot, plus documentation.
http://www.dutchroll.com/

Aviation Flight Control Services, Inc.
Provides overhauls and repairs for all composite and sheetmetal flight control surfaces and other assemblies. Located in Miami, Florida.
http://bellsouthpwp.net/a/v/avifliflight/

Flight Science & Technology Research - University of Liverpool
The group is concerned with modelling and simulation of helicopter and airplane flight dynamic and control problems using FLIGHTLAB and a six degree of freedom flight simulator.
http://dbweb.liv.ac.uk/engdept/content/centres/fst/

Advanced Simulation Systems Flight Simulators
The home of Helicopter and Airplane Flight Simulators, Flight Training Devices, flight controls for the PC, hardware, software and do-it-yourself tips for builders.
http://www.advancedsimulation.com

Integral Systems, Inc.
Integral Systems, Inc. is the world leader in providing complete satellite ground system solutions. Their EPOCH IPS product suite, with it's open architecture, is the most affordable and reliable satellite communication system in the industry today.
http://www.integ.com/

Bendix/King
Manufacturing a vast range of navigation and communications equipment including flight control systems, glideslope receivers, GPWS, TCAS and weather radar systems.
http://www.bendixking.com/

Microbotics, Inc
Products and flight control systems to simplify UAV, RPVs, RC, robotic, unmanned vehicles, UGVs, drones operation: autopilots, servo controllers, INS/GPS inertial navigation, serial converter from Microbotics, Inc.
http://www.microboticsinc.com

High Plains Engineering
Offers tools for flight control system design and flight test simulators, handling qualities, aircraft dynamics, data analysis and tests.
http://www.flightcontrolsystems.com/

NASA: Space Related Applications of Forth
Space related applications of Forth microprocessors and the Forth programming language, including spacecraft flight system controllers, on-board payload experiment controllers, ground support systems (e.g., communications controllers and data processing systems), and hardware or software used to build or test either flight or ground systems.
http://forth.gsfc.nasa.gov/