Extension   

File type

.ade

Microsoft Access project extension

.adp

Microsoft Access project

.asx

Windows Media Audio / Video

.bas

Microsoft Visual Basic class module

.bat

Batch file

.bin

Binary file 

.chm

Compiled HTML Help file

.cmd

Microsoft Windows NT Command script

.com

Microsoft MS-DOS program

.cpl

Control Panel extension

.crt

Security certificate

.exe

Program

.hlp

Help file

.hta

HTML program

.inf

Setup Information

.ins

Internet Naming Service

.isp

Internet Communication settings

.jse

Jscript Encoded Script file

.jsp

Java Server Pages

.lnk

Shortcut

.mda

Microsoft Access add-in program

.mdt

Microsoft Access workgroup information

.mdw

Microsoft Access workgroup information

.mdz

Microsoft Access wizard program

.msc

Microsoft Common Console document

.msi

Microsoft Windows Installer package

.msp

Microsoft Windows Installer patch

.mst

Microsoft Windows Installer transform; Microsoft Visual Test source file

.ops

Office XP settings

.pcd

Photo CD image; Microsoft Visual compiled script

.pif

Shortcut to MS-DOS program

.prf

Microsoft Outlook profile settings

.reg

Registration entries

.scf

Windows Explorer command

.scr

Screen saver

.sct

Windows Script Component

.shb

Shell Scrap object

.shs

Shell Scrap object

.url

Internet shortcut

.vb

VBScript file

.vbe

VBScript Encoded script file

.vbs

VBScript file

.wsc

Windows Script Component

.wsf

Windows Script file

.wsh

Windows Script Host Settings file