MessagePack is a binary serialization format. It is used for efficient data interchange between different programming la...
The .ttf file extension represents a TrueType Font file. TrueType is a font standard developed by Apple and Microsoft in...
The ACIS (.sat, .sab) file format is a geometric modeling kernel developed by Spatial Corporation (now part of Dassault ...
The .crt file extension is most commonly associated with X.509 digital certificates. These files are used extensively in...
The 'localsettings' file is not a formal, registered file extension but rather a widely adopted filename convention for ...
A CFG file is a configuration file used by various software programs to store settings and parameters. These files are t...
A .properties file is a plain text file used to store configuration information for Java applications. It typically cont...
An XSD (XML Schema Definition) file is a document that formally describes the structure, content, and semantics of an XM...
A VHD (Virtual Hard Disk) file is a disk image format that represents a virtual hard drive. It essentially acts as a con...
QCOW2 (QEMU Copy On Write version 2) is a disk image format used by QEMU, a popular open-source virtualization solution....
The OTF (OpenType Font) file format is a widely used standard for digital fonts, developed jointly by Microsoft and Adob...
A DBF file is a database file format commonly associated with dBase, FoxPro, Clipper, and similar database management sy...
The IFC (Industry Foundation Classes) file format is an open, international standard for Building Information Modeling (...
The ODS file extension represents a spreadsheet document format used by OpenOffice and LibreOffice, both open-source off...
STL (Stereolithography) is a file format native to the stereolithography CAD software created by 3D Systems. STL files d...
VRML (Virtual Reality Modeling Language) is a standard file format for representing 3D interactive vector graphics, desi...
TOML is a configuration file format that is easy to read due to its simple syntax. It is designed to be easily parsed in...
A .prt file is a part file created by Siemens NX (formerly Unigraphics NX), a professional CAD/CAM/CAE software suite. I...
A VDI file is a Virtual Disk Image file format used by Oracle's VirtualBox virtualization software. It contains the enti...
A .SYS file is a system file used by Microsoft Windows and other operating systems. These files typically contain device...
NetCDF (Network Common Data Form) is a set of software libraries and self-describing, machine-independent data formats t...
Geography Markup Language (GML) is an XML grammar defined by the Open Geospatial Consortium (OGC) used to express geogra...
The SKP file extension is used for 3D models created with SketchUp, a popular 3D modeling software developed by Trimble ...
The .drawio file format is used by draw.io (now diagrams.net), a free, open-source diagramming application. It stores di...
Categories are organized by file type purpose: Documents, Images, Audio, Video, Archives, Executables, Data files, and Programming files.
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Each extension page includes software compatibility, file descriptions, alternatives, and usage information.