List in alphabetic order - K
- K MacroModel Chemical Modeller Output
- K01 Clarion Database Key
- K02 Clarion
- K03 Clarion DOS Database Key
- K1 DataFlex Index
- K10 DataFlex Index
- K11 DataFlex Index
- K12 DataFlex Index
- K13 DataFlex Index
- K14 DataFlex Index
- K15 DataFlex Index
- K2 DataFlex Index
- K25 Kodak K25 Image
- K26 Kurzweil K2600 Format
- K2P Kryptel Encrypted
- K2S Kaiser 2 Saved Game
- K3 DataFlex Index
- K3B K3b Disk Burning Project Format
- K3G 3GP Mobile Phone Video Format
- K4 DataFlex Index
- K48 Apple IOS Kernel Cache
- K5 DataFlex Index
- K6 DataFlex Index
- K7 DataFlex Index
- K8 DataFlex Index
- K9 DataFlex Index
- KA Karma Engine (Unreal) Asset
- KAD Kore User
- KAHL Think Pascal KAHL Text
- KAL KManager Calibration Data
- KAN Kwalitan Annotation
- KAP Maptech BSB Map Format
- KAR Karaoke MIDI Format
- KAS Karaoke
- KB C++ Keyboard Script
- KB2 Kleo Backup Format
- KBB BestCrypt Key Block Backup
- KBD Keyboard Layout Script
- KBF MyInfo Document
- KBM Scala Keyboard Mapping
- KBN TeamSpeak Keybinding
- KBS Keyboard Script Format
- KBX GNU Privacy Guard Keybox
- KC2 Kodak RAW Image
- KCF KiSS Configuration
- KCH KChess Notation
- KCI Visual Studio .NET DB Project Indexing Settings
- KCL Mario Kart Collision Format
- KCT Keyman Developer Customization Source
- KD3 Yayoi Kaikei Accounting Data
- KDA Nova Logic Game
- KDB Keypass Database Format
- KDBX KeePass Password Database
- KDC Kodak DC120 Digital Camera RAW Image Format
- KDD Adobe Authorware RTF Objects Editor Knowledge Display
- KDE KryptoStorage Container Format
- KDELNK KDE Desktop
- KDENLIVE Kdenlive Project Format
- KDEVDLG KDevelop Dialog Box Format
- KDEVELOP KDevelop Project Data Format
- KDEVPRJ KDevelop Project Format
- KDF KARMA MW/Triton Data
- KDH Chinese Academic Journals Online Full-text Database
- KDI KD Player Skin Image Format
- KDK Kodak Proprietary Decimated TIFF Format
- KDL Kill The Deadline Storage
- KDMP Windows Crash Dump Format
- KDR Kinetica Installation
- KDS KD Player Skin Format
- KDT Medbasin Evaporation Data
- KDX Google Earth Import Definition
- KDZ Kaspersky Virus Bases Format
- KEB Kaspersky Virus Bases Format
- KED KEDIT Profile And Macro Format
- KEP Turbo Pascal DOS Tp19 Compressed Kepler
- KER ENVI Filter Kernels
- KES Kurzweil 3000 Document
- KEV JAWS Preload
- KEX KEDIT Profile Macro
- KEXI Kexi Database
- KEXIC Kexi Database Connection Format
- KEXIS Kexi Database Shortcut Format
- KEXT Mac OS X Kernel Extension
- KEY Licence Or Encrypted Security Format
- KEY-TEF Keynote ICloud Presentation
- KEYBOARD Amaya Configuration
- KEYCHAIN Mac OS X Keychain Format
- KEYNOTE IWork Keynote 06 Presentation
- KEYSTORE Java Keytool Key Database
- KEYTAB Unix Kerberos Encrypted Key
- KF The Elder Scrolls Game
- KF8 Amazon Kindle Format 8
- KFG Adobe Acrobat Rule
- KFI 3D Forgastest Editor
- KFL Microsoft Outlook 2007/2010 RSS Feed List
- KFM Gamebryo 3D Model Format
- KFN KaraFun Karaoke Format
- KFS Max Payne Model
- KFT Korg T-series Wave
- KFX Kofax Image Format
- KGB KGB Archive Format
- KGE KGB Archiver Encrypted Compressed Archive
- KGM KeyTERRA-FIRMA Ground Model
- KGS Kogeo Toolbar
- KHD Dynamics AX Kernel Help Data Format
- KHI Dynamics AX Kernel Help Index Format
- KIC Kodak Compressed Image Format
- KID Kidspiration Document
- KID2 Kid Pix
- KIDS Kid Pix
- KIF AutoCAD Key Index
- KIN Kinetic Music Project
- KISMAC KisMAC Webservice Format
- KIT 20-20 Design Format
- KIX KiXtart Script Format
- KJV TheWord Bible Software King James Version Bible
- KKD K Kitchen Burning Project
- KKW Adobe RoboHelp Keyword Help Project Index
- KLC Microsoft Keyboard Layout Creator Keyboard
- KLD Dungeon Keeper 2 Playable Map
- KLF KaloMa
- KLG Log Format
- KLK Orgadata LogiKal
- KLM Keyhole Markup Language (Google Earth)
- KLP CLIP PROJECT Terminal-strip Project
- KLQ Kaspersky Anti-Virus Quarantine Format
- KM BMC Patrol
- KMA Correlate Archive Knowledge Map
- KMC Kinemac Animation Format
- KMCOBJ Kinemac Sprite Object
- KMD ABSTAT For Windows Batch
- KMDI Kermeta
- KMDR Kommander
- KMF Kwalitan Memo
- KML Keyhole Markup Language Format
- KMM K-Meleon Macro Module
- KMN Keyman Developer Source
- KMP Korg Trinity/Triton Keymap Format
- KMR KnowledgeMill Link Format
- KMS Correlate Solution Topic
- KMT Kermeta
- KMV Mobile DJ Video Format
- KMX Keyman Desktop Compiled Keyboard
- KMY KMyMoney Data Format
- KMZ Google Earth Placemark Format
- KNF Orchida Knitting System
- KNN Clarion Database Key
- KNNK OmniPage
- KNO DigIN Serialized Break Model
- KNT KeyNote Note Format
- KNW Live For Speed AI Knowledge
- KO Linux Kernel Module Format
- KOA Koala Paint C64
- KOB Kasemake 3D Object
- KODAK Kodak Photo CD Format
- KODU Kodu Game Format
- KOE AquesTone Vocal Synthesizer Syllable
- KOM Kit-O-Mat 3D Model
- KOMODO KMD
- KON Yahoo! Widget XML Format
- KOOB Koob E-Book Format
- KOR Windows Korean Noise-Words List Format
- KOZ Audiokoz Music Format
- KPDX KeePass Password Database
- KPE KORE Performance
- KPF Komodo Project Format
- KPJ Keyman Developer Project
- KPL KMPlayer Playlist Format
- KPP Kid Pix Presentation
- KPR KPresenter Presentation
- KPS IBM KIPS Bitmap Image Graphics
- KPT KPresenter Template
- KPX Kid Pix Picture
- KPZ Komodo Template Format
- KQP Konica Camera Photo
- KR1 Kurzweil 2000 Sample
- KRAW Mac OS X Kernel-RAW Image Format
- KRC Mouse And Key Recorder Recorded Settings
- KRG Sybase Adaptive Server Information
- KRN NBA 99 Fonts
- KRT Microsoft Visual FoxPro Recreation
- KRZ Kurzweil K2000 Format
- KS Microsoft Works Spreadsheet Format
- KS-IA1 Infinite Algebra
- KS3 3D Forgastest Editor
- KSC Korg Trinity/Triton Script Format
- KSD Absynth Kore Patch Format
- KSDS Absynth Kore Patch Format
- KSEQS Kestrel Sequence Database
- KSF Korg Trinity/Triton Sample Format
- KSH Unix Korn Shell Script
- KSI Alloy Blending System ASCII Data
- KSL Karaoke Song List Creator Song List
- KSM Ken Silverman Music Format
- KSML Halo Custom Edition
- KSP Calligra Sheets Spreadsheet
- KSS FabTrol MRP Template
- KT2 Battery 2 Drum Kit Format
- KT3 Battery 3 Drum Kit Format
- KTH Keynote Theme
- KTN KTooN Animation Project Format
- KTO NetKar Pro Mid Ohio
- KTP Kinetic Project Template
- KTX Kwaitan
- KTZ Kahootz Project Format
- KV6 Ace Of Spades Model Format
- KVK Keyman Desktop On Screen Keyboard
- KVT KVIrc Theme
- KVTML KWordQuiz Format
- KVW Google Earth Workspace
- KWB Kwalitan Work
- KWD KWord Document
- KWF Delphi Pascal Chart
- KWL KWalletManager
- KWM WebMoney Key Format
- KWP Kamban Document
- KWREPLAY Command & Conquer 3 Replay Format
- KWS KeyWallet Skin
- KXX Custom Keyman Engine Product
- KYB Keyboard Layout
- KYN ALSee Thumbnail Cache
- KYR Lotus Domino Key Ring Format
- KYS Adobe Photoshop Keyboard Shortcuts Format
- KZ KuaiZip Compressed Format
- KZM Karizma Designer Album
- KZX Kerkythea Material