| Subject | Portuguese | English |
| comp., MS, Braz. | eXtensible Business Reporting Language | eXtensible Business Reporting Language (An XML language for the electronic communication of business and financial data) |
| comp., MS, Braz. | Extensible HTML | XHTML (A markup language that extends HTML and reformulates it as XML) |
| comp., MS, Braz. | Extensible HTML | Extensible HTML (A markup language that extends HTML and reformulates it as XML) |
| comp., MS, Braz. | linguagem XAML, Extensible Application Markup Language | Extensible Application Markup Language (An XML-based language used to represent a tree of objects. Events generated by these objects can be handled using any .NET programming language) |
| comp., MS, Braz. | Unified Extensible Firmware Interface | Unified Extensible Firmware Interface (A standard programming interface for setting up and booting a computer, based on the Extensible Firmware Interface (EFI) developed by Intel. It provides runtime services, which are used to access the drivers that were loaded in the pre-boot environment. For example, when booting from a network, the operating system can continue to use the same network protocols used to download it in the first place) |