.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

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

Top FSI User Languages

Top FSI File User Browsers

Desktop Friendly?

Mobile Friendly?

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
.VIS	Microsoft Corporation	Game Files	Visibility Image File
.RC_	Microsoft Corporation	Data Files	Microsoft WinHelp Compressed Help Document
.FCT	Salty Brine	Data Files	FolderClone Task List
.GNX	Microsoft Corporation	Data Files	Microsoft PowerPoint Data
.ACCDB	Microsoft Corporation	Database Files	Access 2007 Database File
.ERP	Future Games	Game Files	Alter Ego Game Archive
.M2D	HTC	Settings Files	HTC Manila 2D For Windows Mobile Skin
.ITS	Open Source	Audio Files	Impulse Tracker Sample
.VBA	Microsoft Corporation	Developer Files	Visual Basic For Applications Project
.HXQ	Microsoft Corporation	Data Files	Microsoft Help 2 Query Index