Quality Systems Registrar (QSR)
Founded in 1990, Quality Systems Registrars (QSR) was the first U.S. registrar to achieve accreditation from the then Registrar Accreditation Board (RAB), now known as the ANSI National Accreditation Board (ANAB). With over 30 years of proven credibility and consistency, QSR is dedicated to delivering integrity and quality across all services. QSR offers comprehensive ISO certification, auditing, and training services, covering standards including ISO 9001, ISO 14001, ISO 27001, AS9001, ISO 45001, ISO 20000, RC 14001, and Responsible Care. Committed to impartiality, QSR ensures objectivity throughout the third-party registration process while helping clients maintain compliance and achieve operational excellence. They became part of Amtivo Group in October 2024 and rebranded and integrated into Amtivo in October 2025.