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Website  EXT   Filetype description                                    
    FILExt  $DX  Ca Visual Objects Platform for Developer (CAVO) Backup Index File (CA) 
    FileInfo  {PB  Corel WordPerfect Document Index File 
    FILExt  ~I  AZZ Cardfile Index (Antanas Zdramys
    TrID  ~I  AZZ Cardfile index 
 Header Hexdump:  3C 7E 41 5A 5A 20 43 41 52 44 46 49 4C 45 20 41  
    DotWhat  ~SG  TapCIS Message Index File 
    FILExt  ~SG  TAPCIS Message Index File 
    File Extensions  ~SG  TapCIS message index file 
    File Extensions  001-999  Database index files 
    FILExt  001  Superbase Index File (001-999) (Superbase Developers plc) 
    File Extensions  001  Superbase index file (001-999) 
    FILExt  ADI  Advantage Database Server Database Index File (Sybase Inc.) 
    File Extensions  ADI  Advantage Database Server index file 
    Wikipedia  ADI  Database Index File - Advantage Database Server 
    FileInfo  ADI  Dynamics AX Developer Documentation Index File 
    File Extensions  ADX  Approach database index file 
    FILExt  ADX  Approach Index File (IBM) 
    FileInfo  ADX  Approach Index File 
    TrID  ADX  Lotus Approach database index 
 Header Hexdump:  03 00 00 00 41 50 50 52 
    DotWhat  ADX  Lotus Approach dBase Index 
    DotWhat  AHI  Dynamics AX Online Help Index File 
    FileInfo  AHI  Dynamics AX Online Help Index File 
    DotWhat  AIH  ArcView : attribute index file 
    FILExt  AIH  ArcView Optional Index File (ESRI
    File Extensions  AIH  Atribute index file 
    FILExt  AIN  ArcView Optional Index File (ESRI
    File Extensions  AIN  Atribute index file (ArcView index file
    File Extensions  AKW  A-Keywords (RoboHELP Help project index designer
    FILExt  AKW  RoboHELP Help Project Index File 
    File Extensions  ALI  Axapta application label index file 
    FileInfo  ALI  Dynamics AX Label Index File 
    DotWhat  ALI  Dynamics AX Label Index 
    FILExt  ALX  Alpha Five Library Index (Alpha Software Inc.) 
    DotWhat  AOI  Dynamics AX Application Object Index File 
    FileInfo  AOI  Dynamics AX Application Object Index File 
    File Extensions  ASP  Adobe Photoshop photo file index 
    FILExt  ASP  Photoshop Photo File Index (Adobe Systems Incorporated
    DotWhat  ASP  Photoshop Photo File Index 
    FILExt  ASX  Alpha Five Temporary Index (Alpha Software Inc.) 
    File Extensions  ASX  Alpha Five temporary index file 
    File Extensions  AUX  Protein Sequence Database AUTHOR command support index file 
    DotWhat  AXD  Avery Label Pro Re-Index File 
    File Extensions  AXD  Avery Laber Pro re-index file 
    FILExt  AXD  Label Pro Re-Index (Avery
    FILExt  BAG  PMMail 2000 Mail Index File (Blueprint Software Works
    File Extensions  BAG  PMMail 2000 Mail index file 
    FILExt  BAG  PMMail/2 Mail Index File (V.O.I.C.E. (Virtual OS/2 International Consumer Education)) 
    File Extensions  BAG  PMMail/2 Mail index file 
    DotWhat  BCF  ConfigSafe Snapshot Index 
    FILExt  BCF  ConfigSafe Snapshot Index 
    File Extensions  BCF  ConfigSafe snapshot index 
    FILExt  BDX  JavaBib Index File 
    File Extensions  BDX  JavaBib index file 
    FILExt  BFI  Blaise Index (Statistics Netherlands
    File Extensions  BFI  Blaise index file 
    FILExt  BIX  Index to a .BIB BibTeX Bibliography Database 
    FILExt  BKI  Backup Index 
    DotWhat  BKI  IBM BookManager Backup Index 
    FILExt  BKI  IBM BookManager Backup Index 
    File Extensions  BKI  IBM BookManager backup index 
    FILExt  BKI  IBM Softcopy Reader (Bookmanager) Bookshelf (and Book) Index File (IBM) 
    TrID  BKI  IBM Softcopy Reader (Bookmanager) Bookshelf (and Book) index file 
 Header Hexdump:  00 00 00 00 F1 4B F2 40 
    FILExt  BMI  Blaise Index File (Statistics Netherlands
    File Extensions  BMI  Blaise index file 
    File Extensions  BRX  file for browsing an index of multimedia options 
    FILExt  BRX  Multimedia Browsing Index 
    FILExt  BTR  FrontPage Binary-Tree Index (Microsoft Corporation
    TrID  BTR  FrontPage Binary-tree index 
 Header Hexdump:  1C 01 00 00 
    TrID  BTX  DB/TextWorks Database Term and Word Index 
 Header Hexdump:  42 54 58 20 30 30 35 20 
    File Extensions  BTX  InMagic database term/word index 
    File Extensions  BTX  SEEDIS index file 
    FILExt  BTX  SEEDIS Index 
    File Extensions  C2E  Chinese dictionary file index 
    FILExt  C2E  NJStar Chinese Word Processor Dictionary File Index (NJStar Software Corp.) 
    FILExt  CDX  Alpha Five Table Index (Alpha Software Inc.) 
    File Extensions  CDX  Alpha Five table index 
    Wikipedia  CDX  Compound index file - Visual FoxPro, Advantage Database Server 
    FileInfo  CDX  Compound Index File 
    File Extensions  CDX  Compound index file 
    TrID  CDX  Compound index MS Visual FoxPro
 Header Hexdump:  00 04 00 00 00 00 00 00 00 
    DotWhat  CDX  Compound Index 
    FILExt  CDX  Compound Index 
    File Extensions  CDX  FoxPro Compound index (database container
    FILExt  CDX  iAnywhere Index File (Sybase Inc.) 
    File Extensions  CDX  iAnywhere index file 
    FILExt  CDX  MicroStation Cell Library Index (Bentley Systems Incorporated
    File Extensions  CDX  MicroStation cell library index 
    File Extensions  CDX  Microstation Cell Library Index 
    DotWhat  CDX  MS Visual Foxpro Index 
    FILExt  CDX  NovaBACKUP Backup Database Index (NovaStor Corporation
    File Extensions  CDX  NovaBACKUP backup database index 
    TrID  CDX  Sybase iAnywhere index files 
 Header Hexdump:  00 04 00 00 00 
    Cryer  CDX  Visual FoxPro compound index 
    FILExt  CDX  Visual Foxpro Index (Microsoft Corporation
    DotWhat  CERI  Netscape Certificate Index 
    DotWhat  CERT  Netscape Certificate Index 
    FILExt  CHI  Help File Index (Microsoft Corporation
    File Extensions  CHI  Help File index 
    Cryer  CHI  Help file index 
    TrID  CHI  Windows HELP Index 
 Header Hexdump:  49 54 53 46 03 00 00 00 60 00 00 00 01 00 00 00 
    FileInfo  CHW  Compiled Help Index File 
    FILExt  CHW  HTML Help General Index Funtionally comparable to .GID. 
    DotWhat  CHW  HTML Help general index 
    File Extensions  CHW  HTML help general index 
    Wikipedia  CIX  Database index - TCU Turbo C Utilities 
    File Extensions  CIX  Database index (Turbo C Utilities
    DotWhat  CIX  TCU Turbo C Utilities Database Index 
    FILExt  CIX  TCU Turbo C Utilities Database Index 
    DotWhat  DAS  PackRat Index 
    FILExt  DAS  PackRat Index 
    File Extensions  DAS  PackRat index 
    FILExt  DB1  ImageDatabase Index to Image Database (A.I.Soft
    File Extensions  DB1  ImageDatabase index to image database 
    File Extensions  DB2IND  Microsoft Visual Studio DB2 index file 
    DotWhat  DBX  Database Index 
    FILExt  DBX  Database Index 
    Wikipedia  DCX  DataBaseContainer Index - Visual FoxPro 
    FileInfo  DCX  FoxPro Database Index 
    Cryer  DCX  FoxPro database index 
    File Extensions  DDX  Alpha Five data dictionary index 
    FILExt  DDX  Alpha Five Dictionary Index File (Alpha Software Inc.) 
    FILExt  DMS  Packrat Database Index 
    File Extensions  DMS  Packrat database index 
    FILExt  DMX  Medical Manager DML System Index for Custom .DME Files 
    FILExt  DRINDX  Indexer Index of FIles (DotRational Software
    FILExt  DTX  pfs:Q&A Index 
    FILExt  E2C  NJStar Chinese Word Processor Dictionary File Index (NJStar Software Corp.) 
    File Extensions  ECARD  eCard (Exchanage Card) format phone index or phone book format 
    DotWhat  ECARD  eCard (Exchanage Card) format phone index or phone 
    Cryer  EDB  Windows Search index database file 
    FILExt  EIG  Easy Index Generator Project (Easy HTools Corporation
    FILExt  ESI  Escape Level Index (Tom Murphy VII) 
    File Extensions  ESI  Escape level index file 
    FILExt  EVI  EchoView Index File 
    FILExt  FBN  ArcView Spatial Index File For Read-Only Datasets (ESRI
    File Extensions  FBN  ArcView spatial index file for read only datasets 
    DotWhat  FBN  Spatial index file 
    FILExt  FBX  ArcView Spatial Index File For Read-Only Datasets (ESRI
    File Extensions  FBX  ArcView spatial index file for read-only datasets 
    DotWhat  FBX  Spatial index file 
    FILExt  FDI  FormDocs Index (Formdocs LLC) 
    File Extensions  FDI  FormDocs index 
    File Extensions  FDX  Force index file 
    DotWhat  FDX  Force Index 
    FILExt  FDX  Force Index 
    FILExt  FFA  Fast Find Status File (Index) (Microsoft Corporation
    FILExt  FFX  Fast Find Index (Microsoft Corporation
    TrID  FFX  Microsoft Fast Find Index v1.x 
 Header Hexdump:  4D 69 63 72 6F 73 6F 66 74 20 28 52 29 20 46 75  
    FileInfo  FFX  Microsoft Find Fast Index 
    DotWhat  FFX  Microsoft Office Fast Find File Index 
    File Extensions  FFX  MS Office Find Fast index file 
    FILExt  FIDX  Fiasco Database Index 
    TrID  FIDX  Fiasco Database: index File 
 Header Hexdump:  46 44 42 48 00 
    Wikipedia  FIT  File Index Table - WindowsNT 
    DotWhat  FIT  File index table 
    File Extensions  FIT  Microsoft Windows NT file index table file 
    FILExt  FIT  Windows NT File Index Table (Microsoft Corporation
    FILExt  FMP  Profit Plan Financial Master Plan Index (Security Development Corporation
    File Extensions  FMP  Profit Plan financial master plan index 
    DotWhat  FT  Full text index 
    File Extensions  FT  Lotus Notes Full Test index 
    FILExt  FT  Notes Full Text Index (IBM) 
    DotWhat  FTB  Index file 
    FILExt  FTB  Roots3 Index File 
    File Extensions  FTB  Roots3 index file 
    Cryer  FTS  Help index file 
    DotWhat  FTS  Help system full-text search index 
    FILExt  FTS  Windows Help Full-Text Search Index File (Microsoft Corporation
    TrID  FTS  Windows Help Full-Text Search index file 
 Header Hexdump:  74 66 4D 52 
    File Extensions  FTS  Windows Help index 
    TrID  GID  GID Help index 
 Header Hexdump:  3F 5F 03 00 
    Wikipedia  GID  Help index - windows 95 help 
    File Extensions  GID  Microsoft Windows Help general index file 
    Cryer  GID  Windows (help) global index 
    FILExt  GID  Windows Help Index File (Microsoft Corporation
    DotWhat  GID  Windows Help Index File 
    FileInfo  GID  Windows Help Index File 
    Cryer  GIX  MapServer sheet index file 
    File Extensions  H1K  Keyword index - Microsoft Windows Assistance Platform client help related file 
    FileInfo  H1Q  Microsoft Help Merged Query Index File 
    File Extensions  H1Q  Microsoft Help Merged Query Index file 
    FILExt  HBI  Handy Backup Backup Index File (Novosoft LLC) 
    DotWhat  HDX  AutoCAD Help index 
    Wikipedia  HDX  Help index - AutoCAD - Zortech
    File Extensions  HDX  Help index file 
    FILExt  HDX  Help Index 
    DotWhat  HDX  Zortech Help index 
    FILExt  HHK  HTML Help Index (Microsoft Corporation
    FileInfo  HHK  HTML Help Index 
    Cryer  HHK  HTML Help Workshop Index file 
    DotWhat  HHK  MS HTML Help Index 
    File Extensions  HHK  MS HTML Help Index 
    FILExt  HI  Spy-CD CD Search Index File 
    File Extensions  HI  Spy-CD CD search index file 
    FILExt  HXK  Help 2 Keyword Index (Microsoft Corporation
    FILExt  HXK  Help TOC/Index File 
    FILExt  HXT  Help TOC/Index File 
    FILExt  HXW  Help 2 Merged Keyword Index (Microsoft Corporation
    FILExt  IBL  PCLTool Index-by-Location File (Page Technology Marketing Inc.) 
    FILExt  IC1  ZyIMAGE Index 
    Cryer  ID  MapInfo index file 
    File Extensions  IDB  PocoMail index file 
    FILExt  IDX  ArcView Geocoding Index For Read-Only Datasets (ESRI
    File Extensions  IDX  ArcView geocoding index for read-only datasets 
    Cryer  IDX  C-tree plus index file 
    FILExt  IDX  Ca Visual Objects Platform for Developer (CAVO) Index File (CA) 
    File Extensions  IDX  CA Visual Objects platform for developer (CAVO) index file 
    FILExt  IDX  Clip Gallery 1.x Index (Microsoft Corporation
    FILExt  IDX  Complete Works Index File (Toplevel Computing
    File Extensions  IDX  Complete Works index file 
    File Extensions  IDX  Corel QuickFinder index 
    FILExt  IDX  FoxPro Index (Microsoft Corporation
    Cryer  IDX  FoxPro index file 
    FileInfo  IDX  HMI Historical Log Index File 
    FILExt  IDX  ICQ Index (ICQ Inc.) 
    Wikipedia  IDX  Index - many - FoxPro - also unrelated Quicken file format
    DotWhat  IDX  Index File (Generic
    FileInfo  IDX  Index File 
    File Extensions  IDX  Index file 
    FILExt  IDX  Index 
    FILExt  IDX  Java Applet Cache Index (Sun Microsystems Inc.) 
    File Extensions  IDX  Java Applet cache index 
    TrID  IDX  Java Applet cache index 
 Header Hexdump:  10 00 
    File Extensions  IDX  LaTeX index file 
    FILExt  IDX  LaTeX Index 
    File Extensions  IDX  Microsoft Outlook Express index file 
    FILExt  IDX  Outlook Express Mailbox Index (Microsoft Corporation
    FileInfo  IDX  Outlook Express Mailbox Index File 
    DotWhat  IDX  Outlook Express Mailbox Index 
    File Extensions  IDX  PocoMail index file 
    FILExt  IDX  Pro/ENGINEER Index File (PTC) 
    File Extensions  IDX  Pro/Engineer index file 
    File Extensions  IDX  RCA Lyra handheld MP3 player database index 
    FILExt  IDX  RCA/Lyra Handheld MP3 Player Database Index (RCA) 
    File Extensions  IDX  Relational database index (Microsoft FoxPro
    FILExt  IDX  Symantec Q&A Relational Database Index File (Symantec Corporation
    File Extensions  IDX  Symantec Q&A relational database index file 
    TrID  IDX  VobSub Index file 
 Header Hexdump:  23 20 56 6F 62 53 75 62 20 69 6E 64 65 78 20 66  
    FILExt  IDX  VSFilter Index File 
    File Extensions  IDX  VSFilter index file 
    File Extensions  IDX  VSFilter index file 
    DotWhat  IDX0  Runescape Cache Index File 
    FileInfo  IDX0  Runescape Cache Index File 
    DotWhat  IDY  Index file 
    FILExt  IDY  Index File 
    File Extensions  IDY  Index file 
    FileInfo  IIX  Translation Memory Index File 
    Wikipedia  ILG  data - LaTeX Index Generation log 
    Cryer  IMH  Incredimail email index file 
    FILExt  IND  AOL Thumbnails Index File 
    TrID  IND  AOL thumbnails index 
 Header Hexdump:  41 4F 4C 49 44 58 4B 32 
    Wikipedia  IND  Data Index - dBASE IV 
    File Extensions  IND  dBASE IV or DataPerfect index 
    FILExt  IND  Foxmail E-Mail Box Index 
    File Extensions  IND  FoxMail E-Mail box index 
    DotWhat  IND  Index 
    FILExt  IND  LaTeX or TeX Makeindx Index 
    File Extensions  IND  LaTeX or TeX makeindx index 
    File Extensions  IND  MapInfo index file 
    Cryer  IND  MapInfo index file 
    File Extensions  IND  Microsoft Windows/Applog index 
    FILExt  IND  Windows/Applog Index 
    FILExt  IND  XMap Dataset Index (Delorme
    File Extensions  INDEX  Generally index file 
    DotWhat  INDEX  Index file 
    FILExt  INDEX  Index File 
    DotWhat  INDX  EasyView Index 
    DotWhat  INDX  Microsoft Mail Index 
    FILExt  INFO  ZoomBrowser Image Index (Canon Inc.) 
    FileInfo  INFO  ZoomBrowser Image Index File 
    File Extensions  INFO  ZoomBrowser image index 
    File Extensions  INX  ACL for Windows index file 
    FILExt  INX  ACL for Windows Index 
    DotWhat  INX  FoxBase Database Index 
    FILExt  INX  Foxpro Foxbase Index 
    Wikipedia  INX  Index - Foxbase 
    File Extensions  IOR  Maxwell Render index of refraction 
    Cryer  ISM  MySql index file 
    File Extensions  IST  MakeIndex (TeX) style index 
    FILExt  IST  TeX MakeIndex Style Index 
    DotWhat  IVQ  MSDN InfoViewer 5.0 index full-text searches 
    FILExt  IVQ  MSDN InfoViewer 5.0 index full-text searches 
    File Extensions  IVQ  MSDN InfoViewer 5.0 index full-text searches 
    Wikipedia  IX  data - dtSearch index 
    FileInfo  IX  dtSearch Index File 
    FILExt  IX  FrameMaker Index File (Adobe Systems Incorporated
    DotWhat  IX  Framemaker Index File 
    File Extensions  IX  FrameMaker index file 
    FILExt  IXC  ArcView Geocoding Index For Read-Write Coverages (ESRI
    File Extensions  IXC  ArcView geocoding index for read-write coverages file 
    DotWhat  IXC  Geocoding index for read-write coverages 
    FILExt  IXC  Index+ for Windows Code Definition File (System Simulation Ltd.) 
    File Extensions  IXC  Index+ for Windows code definition file 
    FILExt  IXF  Index+ for Windows Form Defintion File (System Simulation Ltd.) 
    File Extensions  IXF  Index+ for Windows form defintion file 
    FILExt  IXR  Index+ for Windows Report Definition File (System Simulation Ltd.) 
    File Extensions  IXR  Index+ report definition file 
    File Extensions  IXS  ArcView : geocoding index for read-write shapefiles 
    FILExt  IXS  ArcView Geocoding Index For Read-Write Shapefiles (ESRI
    DotWhat  IXS  Geocoding index for read-write shapefile 
    FILExt  JDX  EDICT Index 

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