| Subject | English | Spanish |
| gen. | open service architecture interface | interfaz de arquitectura de servicios abierta |
| gen. | open service architecture interface | interfaz OSA |
| health. | Smart Open Services for European Patients | proyecto de servicios abiertos inteligentes para el paciente europeo |
| comp., MS | Windows Open Services Architecture | Arquitectura de servicios abiertos de Microsoft Windows (A common set of interfaces that connect front-end applications with back-end services) |