File Extension J - JPEG / JFIF Image , etc
File Extension J1 - EDIT Compiler JEDEC Boundary File , etc
File Extension J2A - Jazz Jackrabbit 2 Animation Library (Epic MegaGames Inc.), etc
File Extension J2B - Jazz Jackrabbit 2 Music File (Epic MegaGames, Inc.), etc
File Extension J2D - Jazz Jackrabbit Data File (Epic MegaGames, Inc.), etc
File Extension J2E - Jazz Jackrabbit 2 Episode File (Epic MegaGames, Inc.), etc
File Extension J2G - J2 Fax File , etc
File Extension J2H - Jazz Jackrabbit 2 High Scores (Epic MegaGames, Inc.), etc
File Extension J2I - Jazz Jackrabbit 2 Internet Server Link (Epic MegaGames, Inc.), etc
File Extension J2K - JPEG-2000 JP2 File , etc
File Extension J2L - Jaxx Creation Station Level File (Epic MegaGames Inc.), etc
File Extension J2M - Jazz Jackrabbit 2 Recorded Macro (Epic MegaGames, Inc.), etc
File Extension J2S - Jazz Jackrabbit 2 Language Data (Epic MegaGames, Inc.), etc
File Extension J2T - Jazz Jackrabbit 2 Tile Set (Epic MegaGames, Inc.), etc
File Extension J2V - Jazz Jackrabbit 2 Cinematic File (Epic MegaGames, Inc.), etc
File Extension J62 - Ricoh Digital Camera File , etc
File Extension J6I - Ricoh Digital Camera File (Ricoh Co., Ltd.), etc
File Extension J92 - Javelin Configuration File (Minisoft Inc.), etc
File Extension JA - IBM Tools Updater File , etc
File Extension JACKET - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JACKSU - Jacksum Fingerprint (Dipl.-Inf. (FH) Johann N. Löfflmann), etc
File Extension JAD - Java Application Descriptor File (Sun Microsystems, Inc.), etc
File Extension JAG - Jaguar Server File , etc
File Extension JAIL - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JAM - Joaquim-Andrew-Mats Message Base Proposal , etc
File Extension JAM2 - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JAMMIX - Jammix Enhacer Music Transform File (Danilics Tibor), etc
File Extension JAN93 - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JAP - Fifa World Cup Game Data fe Art Legalscr File , etc
File Extension JAPAN - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JAR - Java Archive (Sun Microsystems, Inc.), etc
File Extension JARRE - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc
File Extension JAS - Paint Shop Pro Compressed Graphic (Corel Corporation), etc
File Extension JASC - JAS Compressed Graphic , etc
File Extension JAU - Jauge , etc
File Extension JAV - Java Source Code (Sun), etc
File Extension JAVA - Java Source Code (Sun), etc
File Extension JAW - IchiTaro Web Japanese Extended WordProcessor (Justsystem Corporation), etc
File Extension JB2 - JBIG2 Bitmap Graphic , etc
File Extension JBB - JobEditor32 Binary Job Data (Motoman Inc.), etc
File Extension JBC - BestCrypt Container (Jetico, Inc.), etc
File Extension JBD - SigmaScan Data File , etc
File Extension JBF - Backup Now Backed Up File (JetSoft Corporation), etc
File Extension JBG - JBIG File , etc
File Extension JBI - JobEditor32 ASCII Job Data (Motoman Inc.), etc
File Extension JBIG - JBIG File , etc
File Extension JBIG2 - JBIG2 Bitmap Graphic , etc
File Extension JBK - Jot + Notes Backup File for Older Version (King Stairs Software), etc
File Extension JBL - Doom Scene Add-in (Id Software, Inc.), etc
File Extension JBP - DJ Jukebox Project , etc
File Extension JBR - Paint Shop Pro Brush (Corel Corporation), etc
File Extension JBS - DesignArt (Anagraph), etc
File Extension JBX - Project Scheduler File , etc
File Extension JC - FlashGet Intermediate Download (Beijing Zhitongwuxian Tech, Ltd.), etc
File Extension JC! - FlashGet Incomplete Download (Beijing Zhitongwuxian Tech, Ltd.), etc
File Extension JCAMP - Misc , etc
File Extension JCB - CB-JCBrooke Song/Module , etc
File Extension JCC - Code Crusader Project Data (New Planet Software), etc
File Extension JCD - FlashGet Download Database File (Beijing Zhitongwuxian Tech, Ltd.), etc
File Extension JCE - JWPce (Glenn Rosenthal), etc
File Extension JCF - JAWS for Windows Configuration File (Freedom Scientific), etc
File Extension JCK - Liquid Motion JACK Scene Description , etc
File Extension JCL - Job Control Language IBM , etc
File Extension JCM - Java Commerce Message Commerce Message (Wallet) (Sun), etc
File Extension JCP - Jesusonic Preset (Cockos Incorporated), etc
File Extension JCS - Flashget Script HTML Table , etc
File Extension JCV - Baseball/Golf Analyzer (JC Video Systems), etc
File Extension JD - Jigsaw Terminal File , etc
File Extension JDA - Winphone Fax Send Journal , etc
File Extension JDB - Winphone Fax Receive Journal , etc
File Extension JDE - Cariverona , etc
File Extension JDF - Job Definition Format Job File , etc
File Extension JDT - Capture Classic Filler (Accelio), etc
File Extension JDX - J Database Exchange (JDX) O/R Mapping Specification (Software Tree, Inc.), etc
File Extension JED - Xilinx Integrated Software Environment Device Configuration Information (Xilinx, Inc.), etc
File Extension JEF - Janome NH10000 Sewing Machine Stitch File (Janome America, Inc.), etc
File Extension JEQ - Jet Audio Saved Equalizer Setting (JetAudio, Inc.), etc
File Extension JESD - JZEasyText Word Processor Save File (JamesZhu Inc.), etc
File Extension JET - Hybrid JetFax Fax , etc
File Extension JFD - JAWS for Windows (Freedom Scientific), etc
File Extension JFF - JPEG Image , etc
File Extension JFG - jEEPers User Specific Information , etc
File Extension JFI - JPEG/JIFF Image , etc
File Extension JFIF - JPEG/JIFF Image , etc
File Extension JFM - Capture Classic (Accelio), etc
File Extension JFX - J2 Fax File , etc
File Extension JG6 - BigJig Jigsaw (Lena Pankratova), etc
File Extension JGCSCS - EditPad Pro Custom Coloring Scheme (JGsoft - Just Great Software), etc
File Extension JGD - Paint Shop Pro Gradient (Corel Corporation), etc
File Extension JGF - JAWS for Windows Configuration File (Freedom Scientific), etc
File Extension JGL - QWS3270 PLUS Session Layout File (Jolly Giant Software Inc.), etc
File Extension JGP - QWS3270 PLUS Session Parameter File (Jolly Giant Software Inc.), etc
File Extension JGS - QWS3270 PLUS Script (Jolly Giant Software Inc.), etc
File Extension JGW - Map File , etc
File Extension JHTM - Dynamo Server Page , etc
File Extension JHTML - Dynamo Server Page , etc
File Extension JIF - Jeff's Image Format Bitmap , etc
File Extension JIG - Jigsaw Game (GameHouse, Inc., a division of RealNetworks, Inc.), etc
File Extension JIGDO - Jigsaw Download Download Instruction File (Richard Atterer), etc
File Extension JIM - Unknown Apple II File (found on Golden Orchard Apple II CD Rom) , etc