Category Overview

Programming File Extensions

Browse all Programming file extensions with detailed information about compatibility, usage, and alternatives.

9
Programming Extensions

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9 Programming extensions available
.FASL

Common Lisp Fast Load File

A FASL (Fast Load) file is a compiled binary object file used by various implementations of the Common Lisp programming language. When ...

Programming
.FREEMARKER

FreeMarker Template

FreeMarker is a template engine: a Java library to generate text output (anything from HTML to auto generated source code) based on tem...

Programming
.FSI

F# Signature File

An F# Signature File, denoted by the .fsi extension, is a specialized source file used in the F# programming language, which is a funct...

Programming
.FSPROJ

F# Project File

An F# Project file, identified by the .fsproj extension, is an XML-based project file used by Microsoft's build system, MSBuild, to man...

Programming
.FSPROJ.USER

Visual Studio F# Project User Options File

An FSPROJ.USER file is a user-specific configuration file used by Microsoft Visual Studio and MSBuild for F# (F Sharp) programming proj...

Programming
.FSSCRIPT

F# Script File

An F# Script file (fsscript) is a source code file used by the F# programming language, which is a functional-first, strongly typed, mu...

Programming
.FSX

F# Script File

An FSX file is a source code script written in F# (pronounced F sharp), which is a functional-first, multi-paradigm programming languag...

Programming
.FTL

FreeMarker Template Language File

An FTL file is a template file used by FreeMarker, a template engine written in Java. FreeMarker is commonly used to generate text-base...

Programming
.FXML

JavaFX Scene Builder Layout File

FXML is an XML-based user interface markup language created by Oracle Corporation for defining the user interface of a JavaFX applicati...

Programming
.FASL

Common Lisp Fast Load File

A FASL (Fast Load) file is a compiled binary object file used by various implementations of the Common Lisp programming language. When a Lisp source f...

.FREEMARKER

FreeMarker Template

FreeMarker is a template engine: a Java library to generate text output (anything from HTML to auto generated source code) based on templates and chan...

.FSI

F# Signature File

An F# Signature File, denoted by the .fsi extension, is a specialized source file used in the F# programming language, which is a functional-first lan...

.FSPROJ

F# Project File

An F# Project file, identified by the .fsproj extension, is an XML-based project file used by Microsoft's build system, MSBuild, to manage and compile...

.FSPROJ.USER

Visual Studio F# Project User Options File

An FSPROJ.USER file is a user-specific configuration file used by Microsoft Visual Studio and MSBuild for F# (F Sharp) programming projects. It is an ...

.FSSCRIPT

F# Script File

An F# Script file (fsscript) is a source code file used by the F# programming language, which is a functional-first, strongly typed, multi-paradigm la...

.FSX

F# Script File

An FSX file is a source code script written in F# (pronounced F sharp), which is a functional-first, multi-paradigm programming language that is part ...

.FTL

FreeMarker Template Language File

An FTL file is a template file used by FreeMarker, a template engine written in Java. FreeMarker is commonly used to generate text-based output, such ...

.FXML

JavaFX Scene Builder Layout File

FXML is an XML-based user interface markup language created by Oracle Corporation for defining the user interface of a JavaFX application. It provides...

Frequently Asked Questions

About Programming Files

Common questions about this file category and related extensions.

Frequently Asked Questions

3 Questions

File extension categories are organized based on file purpose and usage, such as document files, image formats, audio files, video files, and system-related extensions.

Yes, you can browse file extensions alphabetically to quickly find extensions starting with a specific letter.

Each extension page includes a clear description, typical use cases, compatible software, supported platforms, and related or alternative file formats.