| Subject | English | Portuguese |
| law, IT, patents. | free and open-source software | software livre/aberto |
| law, IT, patents. | free/libre and open-source software | software livre/aberto |
| IT | open software | logicial de código-fonte aberto |
| comp., MS, Braz. | Open Software Descriptor file | arquivo OSD (An XML-based file that instructs the client on how to retrieve the sequenced application from the Application Virtualization Management/Streaming Server and how to run the sequenced application in its virtual environment) |
| IT | Open Software Foundation | fundação de sistemas abertos |
| IT | open source software | logicial de código-fonte aberto |
| econ. | open source software | software aberto |
| IT | Software environment for the design of open distributed systems | ambiente do suporte lógico para a conceção de sistemas abertos distribuídos |