Welcome to Accord Software & Systems! Accord Software & Systems was established in 1991 by five technologists who have had worked in the field of Avionics and real time embedded systems over several decades. Over the past 17 years Accord has charted an impressive track record in customer satisfaction, innovation, sales and profitability. Through the sheer persistence of quality and commitment, Accord has carved for itself a niche in the fields of Avionics, Global Navigation Satellite System (GNSS), Real Time Embedded Systems.