Frequently searched file extensions

.3ds

3D Studio Scene

.3dm

Rhino 3D Model

.3mf

3D Manufacturing File

.3dc

3DCrafter Scene File

.3dc

3DCT 3D Image

.5xb

Line 6 POD HD500X Edit Bundle

.5xs

Line 6 POD HD500X Edit Setlist File

.5xe

Line 6 POD HD500X Edit Preset File

.3ga

3GPP Audio File

.8svx

Amiga 8-Bit Sound File

.__b

File Splitter & Joiner Encrypted Archive File

.73b

TI-73 Backup File

.$db

dBASE Temporary File

.~cw

Circuit Wizard Backup File

.__a

File Splitter & Joiner Encrypted File

.3dc

RoboCell Cell Setup File

.3dl

Sierra LandDesigner 3D File

.123dx

123D Design Model File

.123d

Autodesk 123D Drawing

.2d

VersaCAD 2D Drawing File

.3fr

Hasselblad 3F RAW Image

.arw

Sony Digital Camera Image

.ari

ARRIRAW Image

.bay

Casio RAW Image

.cr2

Canon Raw Image File

.7z

7-Zip Compressed File

.7z.001

7-Zip Split Archive Part 1 File

.7z.002

7-Zip Split Archive Part 2 File

.alz

ALZip Archive

.arc

Compressed File Archive

.3dr

3D Rad Project File

.3dr

3DMark Results File

.4dv

4D View Ultrasound File

.4fs

Puppy Linux Save State File

.3dp

3DMark2011 SE Project File

.4dd

4th Dimension Database Data File

.$er

GroupWise Database

.4dl

4th Dimension Database Log File

.^^^

Pervasive.SQL Database File

.accdb

Access 2007 Database File

.4db

4th Dimension Database Structure File

.4th

Forth Language File

.$01

DOS Pipe File

.as

ActionScript File

.as

AngelScript File

.2mg

Apple IIGS Disk Image

.aa

Generic CD Image

.adf

Amiga Disk File

.afd

AFF Disk Image Part File

.ashdisc

Ashampoo Burning Studio Image

.azw

Amazon Kindle eBook File

.azw1

Amazon Topaz eBook

.azw4

Amazon Print Replica eBook

.azw3

Amazon KF8 eBook File

.acsm

Adobe Content Server Message File

.asc

PGP ASCII Armored File

.aes

AES Crypt Encrypted File

.aep

Advanced Encryption Package Encrypted File

.afp

FileProtector Encrypted File

.axx

AxCrypt Encrypted File

.0xe

F-Secure Renamed Virus File

.73k

TI-73 Application

.89k

TI-89 Application

.8ck

TI-83 and TI-84 Plus Application File

.app

Mac OS X Application

.abf

Adobe Binary Screen Font File

.amfm

Adobe Multiple Font Metrics File

.acfm

Adobe Composite Font Metrics File

.afm

Adobe Font Metrics File

.bdf

Glyph Bitmap Distribution Format

.3ds

Nintendo 3DS ROM

.68k

SEGA Mega Drive & Genesis Classics ROM File

.3dsx

Homebrew Launcher File

.32x

Sega 32X ROM

.8ld

Overlord 2 Language File

.3dc

iGO 3D Building File

.3dd

ArcGlobe Document

.3dl

iGO Landmark File

.3d

Survex 3D Cavern File

.aux

Auxiliary File

.3dc

RacerMate 3D Course File

.!bt

BitTorrent Incomplete Download File

.!ut

uTorrent Incomplete Download

._sys.lfo

Adware File

._eml

Windows Live Mail Email File

.4ui

ForeUI Plot File

.ao

ActionOutline Outline File

.anh

Project ROME File

.article

Twixl Publisher Article

.ap

ArtPro File

.8bi

Photoshop Plug-in

.8bs

Photoshop 5.0 Selection Plug-in

.8bx

PhotoDeluxe Plug-in

.8ba

Photoshop Plug-in

.8li

Photoshop Scripting Plug-in

.2bp

Pocket PC Bitmap Image File

.8xi

TI-83/84 Plus Picture File

.9.png

NinePatchDrawable Image

.73i

TI-73 Screenshot File

.8ci

TI-84 Plus C Pic Vars Format

.8st

8start Launcher File

.asp

Adobe Color Separation Setup File

.ase

Adobe Swatch Exchange File

.aux

LaTeX Auxiliary File

.alx

BlackBerry Application Loader XML File

.aws

Ability Spreadsheet File

.ast

Ability Spreadsheet Template

.bks

Microsoft Works Spreadsheet Backup File

.dex

Excel Spreadsheet

.def

SmartWare II Data File

.2fs

Puppy Linux Save State File

.73u

TI-73 Explorer Operating System File

.3fs

Puppy Linux Save State File

.8xu

TI-83 and TI-84 Plus Operating System File

.8cu

TI-84 Plus C Operating System File

.1st

Readme File

.abw

AbiWord Document

.asc

Autodesk ASCII Export File

.asc

ASCII Text File

.ase

Autodesk ASCII Scene Export File

.ai

Adobe Illustrator File

.asy

Asymptote Module

.abc

Micrografx ABC FlowCharter 6 File

.artb

Artboard Document

.afdesign

Affinity Design Document

.3g2

3GPP2 Multimedia File

.3p2

3GPP Multimedia File

.3gpp

3GPP Media File

.3gp2

3GPP Multimedia File

.3mm

3D Movie Maker Movie Project

.aspx

Active Server Page Extended File

.asp

Active Server Page

.asax

ASP.NET Server Application File

.a5w

Alpha Five Webpage File

.atom

Atom Syndication Format