Browse file extensions by category or letter. Learn what each file type is used for and find software that can open, view, edit, or convert it.
Use this directory to look up file formats, understand what files are used for, and find compatible applications for Windows, macOS, Linux, mobile, and online tools.
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The 'a.out' file extension, short for "assembler output," historically represents an executable file format primarily used in Unix-lik…
ActiveX controls are small programs, also known as add-ons, that are used on the Internet to provide interactive content for web pages…
An OCX file is a type of file used by Microsoft Windows operating systems. OCX stands for OLE Control Extension, where OLE stands for…
The .air file extension is primarily associated with the Adobe Integrated Runtime (AIR), a cross-platform runtime system originally de…
The .app extension on macOS signifies an Application Bundle. This isn't a single file, but rather a directory (presented as a single f…
AppImage is a format for distributing portable software on Linux without needing superuser permissions to install the application. It…
The .appx file extension is used for application packages in the Universal Windows Platform (UWP). It's essentially a ZIP archive that…
An ARX file is an AutoCAD Runtime Extension file, which serves as a compiled plugin or add-on for Autodesk AutoCAD software. Developed…
The 'a.out' file extension, short for "assembler output," historically represents an executable file format primarily used in Unix-like operating systems. Whil…
ActiveX controls are small programs, also known as add-ons, that are used on the Internet to provide interactive content for web pages. They are based on Micro…
An OCX file is a type of file used by Microsoft Windows operating systems. OCX stands for OLE Control Extension, where OLE stands for Object Linking and Embedd…
The .air file extension is primarily associated with the Adobe Integrated Runtime (AIR), a cross-platform runtime system originally developed by Adobe Systems…
The .app extension on macOS signifies an Application Bundle. This isn't a single file, but rather a directory (presented as a single file in the Finder) that c…
AppImage is a format for distributing portable software on Linux without needing superuser permissions to install the application. It bundles an application an…
The .appx file extension is used for application packages in the Universal Windows Platform (UWP). It's essentially a ZIP archive that contains all the files n…
An ARX file is an AutoCAD Runtime Extension file, which serves as a compiled plugin or add-on for Autodesk AutoCAD software. Developed using the ObjectARX (Aut…
Everything you need to know about file extensions