.FSI File Overview

File Extension:	FSI
File Type Description:	Visual F# Signature File
File Type Developer:	Microsoft Corporation
Primary Associated Software:	Microsoft Visual Studio
Primary Software Developer:	Microsoft Corporation

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What is File Extension FSI?

Microsoft Corporation created the Visual F# Signature File (FSI) file for the Microsoft Visual Studio software series. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use Visual F# Signature File files. A high percentage of these users browse the web using Google Chrome.

Associated Developers and Software

	FileSplit by Partridge Software
	Microsoft Visual Studio by Microsoft Corporation
	FSI Viewer by NeptuneLabs

Top FSI User Languages

Top FSI File User Browsers

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Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Web

Other File Types Related to FSI Files

Extension	File Type Developer	File Category	File Type Description
.FXP	Microsoft Corporation	Executable Files	FoxPro Compiled Program
.VSSX	Microsoft Corporation	Data Files	Microsoft Visio Stencil Data
.EW	OpenEuphoria	Developer Files	Euphoria Source Code File
.ZUP	Microsoft Corporation	System Files	Microsoft Business Solutions Navision Configuration
.OTP	Oracle Corporation	Data Files	OpenDocument Presentation
.COMPOSITEFONT	Microsoft Corporation	Font Files	Windows Composite Font File
.APPREF-MS	Microsoft Corporation	Settings Files	Microsoft Application Reference File
.HTW	Microsoft Corporation	Data Files	IIS Webhits Template
.VBL	Asphalt Research Consortium	3D Image Files	3DMove 3D Geological Model File
.XLSX	Microsoft Corporation	Spreadsheet Files	Microsoft Excel Open XML Spreadsheet