XAML, which stands for Extensible Application Markup Language, is a declarative XML-based language developed by Microsof...
XHTML (eXtensible HyperText Markup Language) is a markup language that is a reformulation of HTML 4 as an XML applicatio...
A XIB file is an XML-based file format used by Apple's Xcode development environment to define user interfaces for macOS...
XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML docume...
Categories are organized by file type purpose: Documents, Images, Audio, Video, Archives, Executables, Data files, and Programming files.
Yes, use the alphabetic filter buttons to quickly find extensions starting with specific letters.
Each extension page includes software compatibility, file descriptions, alternatives, and usage information.