Since 1983, QSA has been providing application services to users of the HP NonStop platform. QSA offers some of the most functional and widely used products in the NonStop environment and has achieved a peerless reputation for customer service and support. With nearly 30 years of experience exclusive to the NonStop OS, QSA has established itself as a premier software house delivering unmatched levels of reliability and performance. QSA customers include Target Stores, Legacy Health, Inova Health Systems and JP Morgan Chase.