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File Extensions

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.

50
Indexed file extensions

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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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50 extensions
Data Letter: S Clear all
.S2MA

StarCraft II Map Archive

The s2ma file extension is a specialized data format primarily associated with StarCraft II, a real-time strategy game developed by Bl…

Data
.S2ML

SAS Strategy Management Markup Language

The S2ML file extension stands for Strategy Management Markup Language, which is a specialized XML-based format primarily utilized by…

Data
.S3DB

SQLite3 Database File

The .s3db file extension represents a database file used by SQLite, a self-contained, serverless, zero-configuration, transactional SQ…

Data
.SAB

SABnzbd Configuration File

The .sab file extension is associated with SABnzbd, a popular open-source binary newsreader. These files are configuration files that…

Data
.SAS7BCAT

SAS Version 7+ Catalog File

A SAS7BCAT file is a SAS Catalog file created by SAS (Statistical Analysis System) software, starting with version 7. Unlike SAS7BDAT…

Data
.SAS7BDAT

SAS Data Set

The sas7bdat file format is a proprietary binary data format used by the SAS (Statistical Analysis System) software suite. It serves a…

Data
.SAT

ACIS Solid Model

The .SAT file extension is associated with ACIS solid models. ACIS is a geometric modeling kernel developed by Spatial Corporation (no…

Data
.SC2ASSETS

StarCraft II Assets File

The .sc2assets file extension is a proprietary data format developed by Blizzard Entertainment specifically for use with the StarCraft…

Data
.SC2CAMPAIGN

StarCraft II Campaign File

A StarCraft II Campaign file, identified by the .sc2campaign extension, is a specialized data container used by Blizzard Entertainment…

Data
.SC2MAP

StarCraft II Map File

The sc2map file format is a proprietary archive format developed by Blizzard Entertainment specifically for the real-time strategy gam…

Data
.SC2MOD

StarCraft II Modification File

The .sc2mod file extension is primarily associated with StarCraft II, a popular real-time strategy game developed by Blizzard Entertai…

Data
.SC2SCENE

StarCraft II Scene File

A .sc2scene file is a proprietary data format used by the StarCraft II Editor, also known as the Galaxy Editor, which is the official…

Data
.SCX

StarCraft Map File (Expansion)

The SCX file extension is primarily associated with StarCraft: Brood War, a classic real-time strategy game developed by Blizzard Ente…

Data
.SDB

StarOffice Database

The SDB file extension is primarily associated with StarOffice and OpenOffice.org, specifically their database component, Base. It rep…

Data
.SDF

SQL Server Compact Database File

The SDF file extension is primarily associated with the SQL Server Compact (SQL CE) database format developed by Microsoft. It is a co…

Data
.SDOCX

Samsung Notes Document

The SDOCX file format is the proprietary document format used by the Samsung Notes application, primarily found on Samsung Galaxy smar…

Data
.SEQUENCEFILE

Sequence File

SequenceFile is a flat file format prevalent in Hadoop environments, designed to store sequences of binary key/value pairs. It's a cor…

Data
.SFF

Standard Flowgram Format

The Standard Flowgram Format (SFF) is a specialized binary file format primarily utilized in the field of bioinformatics to store data…

Data
.SHP

Shapefile

A shapefile is a popular geospatial vector data format for geographic information systems (GIS) software. It is developed and regulate…

Data
.SKP

SketchUp Model

The SKP file extension is used for 3D models created with SketchUp, a popular 3D modeling software developed by Trimble Inc. These fil…

Data
.SLDPRT

SolidWorks Part Document

A .sldprt file is a 3D CAD (Computer-Aided Design) part file created by SolidWorks, a popular solid modeling software application deve…

Data
.SMC

Super Magicom Cartridge ROM

An SMC file is a ROM image of a game cartridge for the Super Nintendo Entertainment System (SNES). It contains a complete copy of the…

Data
.SMI

Synchronized Multimedia Integration Language

The SMI (Synchronized Multimedia Integration Language) file format, often seen with the extension .smi or .sami, is a text-based marku…

Data
.SNOOP

Snoop Network Capture File

The .snoop file format is a legacy packet capture format originally developed for the Solaris operating system. It is used by the 'sno…

Data
.S2MA

StarCraft II Map Archive

The s2ma file extension is a specialized data format primarily associated with StarCraft II, a real-time strategy game developed by Blizzard Entertainment. The…

Data
.S2ML

SAS Strategy Management Markup Language

The S2ML file extension stands for Strategy Management Markup Language, which is a specialized XML-based format primarily utilized by SAS Strategy Management s…

Data
.S3DB

SQLite3 Database File

The .s3db file extension represents a database file used by SQLite, a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite…

Data
.SAB

SABnzbd Configuration File

The .sab file extension is associated with SABnzbd, a popular open-source binary newsreader. These files are configuration files that store settings and prefer…

Data
.SAS7BCAT

SAS Version 7+ Catalog File

A SAS7BCAT file is a SAS Catalog file created by SAS (Statistical Analysis System) software, starting with version 7. Unlike SAS7BDAT files which contain actua…

Data
.SAS7BDAT

SAS Data Set

The sas7bdat file format is a proprietary binary data format used by the SAS (Statistical Analysis System) software suite. It serves as the primary storage mec…

Data
.SAT

ACIS Solid Model

The .SAT file extension is associated with ACIS solid models. ACIS is a geometric modeling kernel developed by Spatial Corporation (now part of Dassault Systè…

Data
.SC2ASSETS

StarCraft II Assets File

The .sc2assets file extension is a proprietary data format developed by Blizzard Entertainment specifically for use with the StarCraft II: Wings of Liberty gam…

Data
.SC2CAMPAIGN

StarCraft II Campaign File

A StarCraft II Campaign file, identified by the .sc2campaign extension, is a specialized data container used by Blizzard Entertainment's real-time strategy gam…

Data
.SC2MAP

StarCraft II Map File

The sc2map file format is a proprietary archive format developed by Blizzard Entertainment specifically for the real-time strategy game StarCraft II: Wings of…

Data
.SC2MOD

StarCraft II Modification File

The .sc2mod file extension is primarily associated with StarCraft II, a popular real-time strategy game developed by Blizzard Entertainment. These files are es…

Data
.SC2SCENE

StarCraft II Scene File

A .sc2scene file is a proprietary data format used by the StarCraft II Editor, also known as the Galaxy Editor, which is the official modding tool for Blizzard…

Data
.SCX

StarCraft Map File (Expansion)

The SCX file extension is primarily associated with StarCraft: Brood War, a classic real-time strategy game developed by Blizzard Entertainment. These files re…

Data
.SDB

StarOffice Database

The SDB file extension is primarily associated with StarOffice and OpenOffice.org, specifically their database component, Base. It represents a database file c…

Data
.SDF

SQL Server Compact Database File

The SDF file extension is primarily associated with the SQL Server Compact (SQL CE) database format developed by Microsoft. It is a compact, relational databas…

Data
.SDOCX

Samsung Notes Document

The SDOCX file format is the proprietary document format used by the Samsung Notes application, primarily found on Samsung Galaxy smartphones, tablets, and lap…

Data
.SEQUENCEFILE

Sequence File

SequenceFile is a flat file format prevalent in Hadoop environments, designed to store sequences of binary key/value pairs. It's a core component of the Hadoop…

Data
.SFF

Standard Flowgram Format

The Standard Flowgram Format (SFF) is a specialized binary file format primarily utilized in the field of bioinformatics to store data generated by the Roche 4…

Data
.SHP

Shapefile

A shapefile is a popular geospatial vector data format for geographic information systems (GIS) software. It is developed and regulated by Esri as a mostly ope…

Data
.SKP

SketchUp Model

The SKP file extension is used for 3D models created with SketchUp, a popular 3D modeling software developed by Trimble Inc. These files contain all the inform…

Data
.SLDPRT

SolidWorks Part Document

A .sldprt file is a 3D CAD (Computer-Aided Design) part file created by SolidWorks, a popular solid modeling software application developed by Dassault Systèm…

Data
.SMC

Super Magicom Cartridge ROM

An SMC file is a ROM image of a game cartridge for the Super Nintendo Entertainment System (SNES). It contains a complete copy of the game's data, allowing use…

Data
.SMI

Synchronized Multimedia Integration Language

The SMI (Synchronized Multimedia Integration Language) file format, often seen with the extension .smi or .sami, is a text-based markup language used to add su…

Data
.SNOOP

Snoop Network Capture File

The .snoop file format is a legacy packet capture format originally developed for the Solaris operating system. It is used by the 'snoop' command-line utility…

Data
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Frequently Asked Questions

Everything you need to know about file extensions

You can search by entering a file extension directly in the search bar or browse the directory by category or alphabetical index.

Each listing provides a definition of the file extension, common use cases, compatible software, supported platforms, and related or alternative formats.

The database is updated regularly to reflect new file extensions, changes in software compatibility, and evolving file format standards.