Nunjucks is a powerful templating engine for JavaScript, heavily inspired by Jinja2 (Python). Files with the `.njk` exte...
Stylus is a preprocessor scripting language that is compiled into Cascading Style Sheets (CSS). It is designed to be a c...
The .cpp file extension is overwhelmingly associated with C++ source code files. C++ is a powerful, general-purpose prog...
JSX is a syntax extension to JavaScript that allows you to write HTML-like structures within your JavaScript code. It's ...
Liquid is a template engine created by Shopify and written in Ruby. It is used to build dynamic web pages and emails by ...
XIB files are XML-based files used within Apple's Xcode integrated development environment (IDE) to define the user inte...
A VBX file is a custom control used in earlier versions of Visual Basic (VB) and other Windows development environments....
The hxx file extension is a common alternative to the standard .h or .hpp extensions used for C++ header files. It serve...
FreeMarker is a template engine: a Java library to generate text output (anything from HTML to auto generated source cod...
A .nib file, short for "NeXT Interface Builder" file, is a resource file primarily used in Apple's macOS and iOS applica...
Sass (Syntactically Awesome Style Sheets) is a preprocessor scripting language that is compiled or interpreted into Casc...
A file with the .src extension is a generic source code file used by various programming languages and software developm...
The OpenAPI Specification (OAS), formerly known as the Swagger Specification, is a globally recognized standard for defi...
An SDK (Software Development Kit) file typically represents a package containing a comprehensive collection of tools, li...
The .hh file extension is a standard header file format used primarily in C and C++ programming. It serves as a containe...
A file with the .svc extension is a Windows Communication Foundation (WCF) service file used primarily by Microsoft's In...
The SWIFT file extension is primarily associated with source code files written in the Swift programming language. Swift...
The INL file extension is primarily used in C++ programming to store inline function definitions. In C++ development, pa...
The .asm file extension is primarily associated with source code files written in Assembly Language. Assembly language i...
The Swagger file format, now formally known as the OpenAPI Specification (OAS), is a machine-readable interface descript...
RELAX NG (Regular Language for XML Next Generation) is a schema language for XML documents, based on Murata Makoto's REL...
A CXX file is a source code file written in the C++ programming language. C++ is a powerful, general-purpose, compiled p...
RAML (RESTful API Modeling Language) is a YAML-based language used to describe RESTful APIs. It provides a structured, h...
The xcdatamodel file extension is a specialized format used within Apple's Xcode integrated development environment to d...
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.