.??_  Files ending in "_" are often compressed install files of the same
          name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
  .N1E  OM2 OMALI NENA Encrypted Document Version 1
  .N2E  OM2 OMALI NENA Encrypted Document Version 2
  .N2P  Net2Phone File
  .N3E  OM2 OMALI NENA Encrypted Document Version 3
  .N4E  OM2 OMALI NENA Encrypted Document Version 4
  .N64  Nintento 64® Emulation ROM Image
        MiMiX Emulator
  .NA2  Netscape Communicator Address Book
  .NAB  Novell Groupwise Address Book
        Netscape Communicator Address Book
  .NAD  Noder File (Polish)
  .NAI  WinINSTALL File
  .NAM  MS Office Name File (often DISPLAY.NAM - text description)
  .NAN  Nanoscope File
  .NAP  NAP Metafile Vector Image
        Napster Music Security Definition File  [How It Works]
        EnerGraphics VideoShow File
        Electrical Network Analysis and Planification
  .NASB  TheWord & Bible Companion New American Standard Bible
  .NAV  MSN Application Extension
  .NB   Nota Bene Text File
        Mathematica Notebook
  .NC   Graphics File
        Numerical Control Machine Instructions
  .NCB  MS Developer Studio File
  .NCC  Computer Numeric Control File
        NetControl V1 1999 (freeware network health probe)
  .NCD  Norton Change Directory
        NTI CD-Maker File
        CoverDesigner  [XnView]
  .NCF  Netware Command File
        Lotus Notes Internal Clipboard
  .NCH  Outlook Express Folder File [Buy Office XP at Shop.Microsoft]
        On Hold Message/Music File
  .NCR  NCR Image  [XnView]
  .NCT  CoverDesigner  [XnView]
  .NDB  Intellicom Network Database
  .NDL  Lotus Notes
  .NDO  3D Low-polygon Modeler
  .NDS  Indiana Jones and the Infernal Machine Saved Game
  .NDX  Index (usually dBase compatible) [File Structure]
  .NE1  OM2 OMALI NENA Document Version 1
  .NE2  OM2 OMALI NENA Document Version 2
  .NE3  OM2 OMALI NENA Document Version 3
  .NE4  OM2 OMALI NENA Document Version 4
  .NEB  Nortec H.E.L.P. (humidity calculations)
  .NED  MSN Application Extension
  .NEF  Raw Graphic File Format for Nikon Digital SLR Cameras  [XnView]
  .NEO  Neochrome (ST & TT)  [XnView]
  .NES  Nintendo Entertainment System ROM Image
  .NET  Network Configuration
        OrCad Netlist Output File
  .NEW  New Information (e.g., WHATS.NEW)
  .NEX  Nexcon System File (Nexcon is a shell replacement)
  .NFF  WorldToolKit Neutral File Format [Format]
  .NFO  Folio Infobase
        Text File [Open in text editor]
        MS System Info File (XML format)
        Warez Group Info File
  .NG   Norton Guide Online Documentation
  .NGF  Enterasys Networks NetSight Generated Format File
  .NGG  Nokia Group Graphics  [XnView]
  .NGS  NGSSniff File
  .NH   NetHack Defaults File (defaults.nh and/or NHAccess.nh)
  .NHF  Nero HFS-CD Compilation
        Nero File (CD burning/design software)
  .NICK  Office Data File
  .NIL  Norton Icon Library File
  .NIF  NetImmerse File Format
  .NITF  National Imagery Transmission Format  [XnView]
  .NIV  TheWord & Bible Companion New International Version Bible
  .NJP  njPipes Compiler File (generally java or NetRexx code)
  .NJX  NJStar Document
  .NK2  Office Data File
  .NKJV  TheWord & Bible Companion New King James Version Bible
  .NLB  Oracle 7 Data
  .NLD  ATI Radeon Video Driver File
  .NLM  Netware Loadable Module
        LogoManager for Nokia Phones (format for Nokia phone images)  [XnView]
  .NLS  Code Page National Language Support
  .NLTRACK  NoLimits Rollercoaster Simulator Track File
  .NLU  Norton Live Update E-Mail Trigger File
  .NLX  FormWorx Form
  .NMA  Normalised Extinction Corrected Differential Photometry
  .NMD  SwordSearcher File
  .NMI  SwordSearcher File
  .NMO  Virtools Behavioral Objects
  .NMS  Numega Softice's Loader File (includes debugging info)
        Virtools Graphical Scripts
  .NNB  newnovelist Story Outline
  .NNI  ANNI Artificial Neural Network Investing
  .NOB  VersaPro Word Exchange File
        Vampire: La Mascarade Archive  [Dragon UnPACKer]
  .NOD  Noder File (Polish)
  .NOL  Nokia Operator Logo  [XnView]
  .NON  Star Wars - Tie Fighter Mouse Options
  .NOR  ATI Radeon Video Driver File
  .NOT  ActiveNote Post-It-Notes
        Acrobat Spelling File
  .NOW  Text File (e.g., README.NOW)
  .NP   Nokia Planner Project Schedule
        Cliq Accessories Notepad Text [Linux Suite PDF Description]
  .NPD  Noder File (Polish)
  .NPI  dBASE Application Generator Source
  .NPK  MikroTik RouterOS Upgrade Package
  .NPL  DART Pro 98 Noiseprint Info
  .NPM  Nokia Picture Message
        Neopaint Mask  [XnView]
  .NPT  DART Pro 98 Noiseprint Archive Import
  .NRA  Nero Audio-CD Compilation
        Nero File (CD burning/design software)
  .NRB  Nero CD-ROM Boot Compilation
        Nero File (CD burning/design software)
  .NRG  Norton Registration Entries
        Nero CD-Image
        Nero File (CD burning/design software)
        IsoBuster File
  .NRH  Nero Hybrid CD-ROM Compilation
        Nero File (CD burning/design software)
  .NRI  Nero ISO CD-ROM Compilation
        Nero File (CD burning/design software)
  .NRL  iManage File
  .NRM  Nero Mixed-Mode-CD Compilation
        Nero File (CD burning/design software)
  .NRSV  TheWord & Bible Companion New Revised Standard Version Bible
  .NRT  Nokia RingTone
  .NRU  Nero UDF/ISO CD-ROM Compilation
        Nero File (CD burning/design software)
  .NRV  Nero Video-CD Compilation
        Nero File (CD burning/design software)
  .NS2  Lotus Notes 2 Database
  .NS3  Lotus Notes
  .NS4  Lotus Notes Database
  .NS5  Lotus Notes Domino File
  .NSB  Novaschem School Schedule
  .NSC  Noder File (Polish)
        Windows Media Station File (used to gather info for WMP to play content) [Security patch]
  .NSD  NRG Site Database
  .NSF  Lotus Notes Database
        NES Sound File  [Winamp (plugin), Meridian, Nosefart]
  .NSG  Lotus Notes
  .NSH  Lotus Notes
  .NSI  Nullsoft Install System Script
  .NSO  NetStudio Easy Web Graphics File
  .NSP  Multi-Speech Sound File
  .NST  Audio File
        Noise Tracker Music Module
  .NSX  HiPer-Six Index File
  .NT   Windows NT Startup File
  .NTF  Lotus Notes Database Template
  .NTO  NTOScanner (TCP port scanner)
  .NTP  Neato CD Labels
  .NTR  Netrun Executable Text File
  .NTS  Norton Tutorial
        Netsend Executable Text File
  .NTW  LVNet - Low Voltage Networks Analysis
  .NTX  Clipper Index
        .NTX Web Audio File
        Network Terminal Accelerator Adapter Card Configuration Information
        CARIS Marine Navigation Info
  .NTZ  InVircible Directory Integrity Information
  .NUF  Procomm Plus New User Message
  .NUL  Grand Theft Auto (Playstation 2) Game File
  .NUM  Guitar Chords in Nashville Numbering System Format [On-line Guitar Archive]
  .NV   Juno Access Number Info File
        Visicontrol MVS-20 Non-Volatile Memory Backup File (Ver
        A4Tech Scanner Graphic