Airbus
Airbus has deployed Reqtify across all the software and hardware projects for their aircraft programs.
Reqtify was initially developed in 2000, based on a specification from Airbus to support the A340 and A380 projects. Since then, Reqtify has been widely deployed on software and hardware projects, and is now used by several hundred engineers from Airbus and its subcontractors. Reqtify has been DO-178B qualified as a verification tool for the AIRBUS process.
Find out more here: AIRBUS 30 years of traceability