| Extension | File Type | File Description |
|---|---|---|
| N | Data Files | Cygwin man file |
| N | Programming Files | Neko bytecode |
| N-GAGE | Game Files | N-Gage Application |
| N3PMESH | Game Files | Knight Online 3D Mesh File |
| N64 | Game Files | Nintendo 64 Emulator ROM File |
| NA2 | Miscellaneous Files | Netscape Address Book File |
| NAM | Miscellaneous Files | |
| NAP | Audio Files | |
| NARC | Game Files | Nintendo DS Archive File |
| NAS | Miscellaneous Files | |
| NAV | Miscellaneous Files | MSN Application Extension File |
| NAV | Game Files | Id Tech 3 Bot Navigation File |
| NAV2 | Miscellaneous Files | WinAVI Temporary Navigation File |
| NAZ | Game Files | Total Overdose Game Data File |
| NB | Spreadsheet Files | Mathematica Notebook |
| NB | Text Files | Nota Bene File |
| NB0 | System Files | Device Boot Loader Image |
| NB7 | Backup Files | NovaBACKUP Output File |
| NBA | Backup Files | Nero BackItUp Archive |
| NBAK | Backup Files | Neat Backup File |
| NBC | Programming Files | Next Byte Codes Source Code File |
| NBD | Backup Files | NovaBACKUP File |
| NBD | Backup Files | Data Backup Data File |
| NBF | Backup Files | Backup Now Archive |
| NBF | Raster Image Files | NVIDIA scene graphic |
| NBF | Backup Files | Nokia phone side backup file |
| NBI | Backup Files | Nero BackItUp Information File |
| NBM | Plugin Files | NetBeans Module |
| NBP | Plugin Files | NeoBook Plugin File |
| NBP | Data Files | Mathematica Player Notebook File. |
| NBS | Backup Files | NTI Backup Set |
| NBT | Data Files | Minecraft Named Binary Tag File |
| NBU | Backup Files | Nokia Phone Backup File |
| NBZ | Data Files | ArcSoft Total Media Backup & Record backup file |
| NC | CAD Files | Mastercam Numerical Control File |
| NC | Data Files | NetCDF Network Common Data Form |
| NCB | Settings Files | |
| NCB | Programming Files | Visual C++ IntelliSense Database |
| NCB | Document Files | |
| NCD | Data Files | |
| NCD | Raster Image Files | Nero CoverDesigner File |
| NCD | Disk Image Files | NTI CD-Maker Disc Image |
| NCF | Game Files | No Cache File |
| NCFG | Settings Files | ArcGIS Explorer Configuration File |
| NCH | Miscellaneous Files | Outlook Express Folder File |
| NCO | Backup Files | Nero BackItUp File |
| NCOR | Video Files | Adobe Encore Project File |
| ncr | Miscellaneous Files | |
| NCS | Game Files | |
| NCS | Data Files | |
| NCS | Miscellaneous Files | KOTOR (Knight Of The Old Republic) compiled script |
| nct | Miscellaneous Files | |
| nct | Raster Image Files | Ahead Nero CoverDesigner Template |
| NCW | Audio Files | Native Compressed Wave File |
| NCW | Miscellaneous Files | Nero CoverDesigner Wizard File |
| NCX | eBook Files | EPUB Navigation Control XML File |
| ncy | Miscellaneous Files | |
| ND | Settings Files | QuickBooks Network Data File |
| ND5 | Miscellaneous Files | Renamed NDS File |
| NDA | Disk Image Files | |
| NDB | Miscellaneous Files | SeeYou waypoint file |
| NDB | Data Files | ClamAV Extended Signature File |
| NDB | Data Files | NEPLAN node data file |
| NDC | Settings Files | Personal Communications Settings File |
| NDF | Database Files | SQL Server Secondary Database File |
| NDF | Data Files | Channel Data File/ESET Smart Security Quarantine Data |
| NDIF | Disk Image Files | Apple NDIF disk image file |
| NDL | Miscellaneous Files | Lotus Notes Doclink File |
| NDR | Miscellaneous Files | Nikon Capture image dust off file |
| NDR | Executable Files | RAVE Reports report file |
| NDS | Game Files | Nintendo DS Game ROM |
| NDX | Data Files | dBASE Index File |
| NED | Programming Files | OMNeT++ Network Description File |
| NEF | Raster Image Files | Nikon Electronic Format RAW Image |
| neo | Miscellaneous Files | NeoChrome Bitmap Image |
| NES | Game Files | Nintendo (NES) ROM File |
| NET | Plugin Files | FileMaker Networking Module |
| NET | Data Files | netViz Project File |
| NETCDF | Miscellaneous Files | |
| NEU | CAD Files | Pro/ENGINEER Neutral File |
| NEW | Text Files | New information file |
| NFB | Backup Files | Nokia Phone Backup File |
| NFC | Backup Files | Nokia Phone Backup Copy File |
| NFF | 3D Graphics Files | Neutral File Format |
| NFI | Disk Image Files | Dreambox Disc Image |
| NFO | Text Files | Warez Information File |
| NFO | Game Files | Age of Empires Player File |
| NFO | System Files | System Information File |
| NFO | Miscellaneous Files | Folio Views Infobase File |
| NFS11SAVE | Game Files | |
| NFTR | Font Files | Nintendo DS Font Type File |
| NGAGE | Game Files | N-Gage Game File |
| NGC | CAD Files | Xilinx Generated Netlist File |
| NGC | Game Files | NeoGeo Pocket Color ROM |
| NGD | CAD Files | Xilinx Netlist File |
| NGG | Image Files | Nokia Group Graphics bitmap |
| NGP | Game Files | NeoGeo Pocket ROM |
| NGR | Archive Files | |
| NGR | Data Files | |
| NGT | GIS Files | Noni GPSPlot Track File |
| NIB | Disk Image Files | Disk image file/Apple Interface Builder NIB archive (XML/Binary) |
| NICK | Miscellaneous Files | Outlook 2000 Nickname File |
| NIF | 3D Graphics Files | Gamebryo Model File |
| NIL | Raster Image Files | Norton Icon Library file |
| NIL | Data Files | QIP file |
| NITF | Data Files | |
| NJB | Miscellaneous Files | Nikon Photo Index File |
| NJI | Settings Files | Nero Job Information File |
| NK2 | Miscellaneous Files | Outlook 2002 Nickname File |
| NKB | Audio Files | Kontakt Audio Bank |
| NKI | Audio Files | KONTAKT Instrument File |
| NKM | Audio Files | Kontakt Multi Instrument File |
| NKP | Settings Files | Kontakt Presets File |
| NKS | Audio Files | Kontakt Monolith Container |
| NKX | Audio Files | Kontakt Monolith Container File |
| NL | Data Files | Note Ledge File |
| NLM | Raster Image Files | Nokia Logo Manager bitmap |
| NLM | System Files | |
| NLM | Miscellaneous Files | Novell Netware loadable module file |
| NLS | Programming Files | NetLogo Source File |
| NLS | System Files | Microsoft National Language Support File |
| NLTRACK | Game Files | NoLimits Roller Coaster Track File |
| NLX | Miscellaneous Files | |
| NMC | GIS Files | ArcGIS Explorer Map Content File |
| NMEA | GIS Files | Global Positioning file (GPS) |
| NMF | GIS Files | ArcGIS Explorer Map File |
| NN | Disk Image Files | Nero CD File List |
| NNG | Data Files | Pioneer AVIC Navigation unit file |
| NOL | Image Files | Nokia Operator Logo bitmap |
| NOMEDIA | Miscellaneous Files | Android No Media File |
| NOT | Data Files | Notation File |
| NOT | Data Files | Finale Note File |
| NOTE | Audio Files | Notessimo Composition |
| NOTEBOOK | Data Files | SMART Notebook File. |
| NOTES | Text Files | Memento Notes File |
| NP | Data Files | Portfolio NetPublish File |
| NPC | Data Files | |
| NPC | Miscellaneous Files | |
| NPE | Settings Files | |
| NPF | Audio Files | Nero SoundTrax project file |
| NPF | Backup Files | NTI Partition File |
| NPI | Database Files | |
| NPJ | Game Files | |
| NPL | Audio Files | Cubase Library Files |
| NPL | Data Files | Nokia Playlist Files |
| NPL | Data Files | Xilinx ISE 5-6 Project File |
| NPM | Miscellaneous Files | CorelDRAW 10 draw media lines file |
| NPM | Image Files | Nokia phone picture message |
| NPP | Page Layout Files | Art Explosion Publisher Pro Document |
| NPS | Backup Files | NTI Partition Set |
| NQC | Programming Files | Not Quite C Source Code File |
| NRA | Audio Files | Nero Audio Compilation |
| NRB | Backup Files | |
| NRC | Backup Files | Nero UDF/ISO CD-ROM compilation |
| NRD | Data Files | Nero DVD-Video Compilation File |
| NRF | Data Files | NEC scanner file |
| NRF | Data Files | NEM-Review Analysis files |
| NRG | Disk Image Files | Nero CD/DVD Image File |
| NRI | Disk Image Files | Nero ISO CD Compilation File |
| NRL | Data Files | Autonomy Interwoven Link File |
| NRM | Miscellaneous Files | |
| NRM | Backup Files | |
| NRS | Backup Files | NovaBACKUP Restore Script |
| NRT | Audio Files | Nokia Ringtone |
| NRU | Backup Files | |
| NRW | Backup Files | Nero CD-ROM (WMA) compilation file |
| NRW | Raster Image Files | Nikon Raw Image File |
| NS2 | Database Files | Lotus Notes 2 Database |
| NS3 | Database Files | Lotus Notes 3 Database |
| NS4 | Database Files | Lotus Notes 4 Database |
| NSA | Audio Files | Nullsoft Streaming Audio File |
| NSBCA | Game Files | Nintendo DS Model Animation File |
| NSBMD | Game Files | Nintendo DS Model File |
| NSBTX | Game Files | Nintendo DS Model Texture File |
| NSF | Database Files | Lotus Notes Database |
| NSF | Audio Files | NES Sound Format File |
| NSH | Programming Files | NSIS Header File |
| NSI | Programming Files | NSIS Script |
| NSIS | Archive Files | |
| nsr | Miscellaneous Files | |
| NSS | Miscellaneous Files | Magnetic Screensaver File |
| NST | Audio Files | NoiseTracker Module |
| NST | Document Files | |
| NST | System Files | |
| NSV | Video Files | Nullsoft Streaming Video File |
| NT | Programming Files | |
| NT | Data Files | theWord module file |
| NT | System Files | Windows NT Startup File |
| NTC | Settings Files | Camera Control Pro Custom Curves File |
| NTF | Miscellaneous Files | MediaFACE II CD Label File |
| NTF | Data Files | Lotus Note Template |
| NTFS | System Files | NTFS Partition File |
| NTH | Settings Files | Nokia Series 60 theme file |
| NTH | Raster Image Files | ImageMagick VisualMagick JBIG file |
| NTH | Miscellaneous Files | Nokia Series 40 Theme File |
| NTN | Audio Files | NOTION Song File |
| NTQ | Data Files | Warning POI files |
| NTRK | Game Files | Pacific FIghters Online Track File |
| NTS | Settings Files | Lotus Notes Traveler Server Config File |
| NTSC | Video Files | |
| NTX | Data Files | theWord Encrypted New Testament Text Module |
| NTX | Data Files | Clipper Index File |
| NUF | Miscellaneous Files | |
| NUM | Data Files | Diction file |
| NUMBER | Miscellaneous Files | Unknown Apple II File |
| NUMBERS | Spreadsheet Files | Apple Numbers Spreadsheet File |
| NUP | Miscellaneous Files | Smart Security Update File |
| NUT | Video Files | NUT Video File |
| NUV | Video Files | NuppelVideo File |
| NV | Game Files | MAME NVRAM File |
| NV | Database Files | NewViews Database File |
| NV2 | Database Files | NewViews 2 Database File |
| NVC | Video Files | NeroVision Express Project File |
| NVC | Settings Files | Nikon Vignette Correction File |
| NVF | Audio Files | Creative Labs NVF Audio File |
| NVRAM | Data Files | VMware NVRAM File |
| NVU | Miscellaneous Files | Nvidia graphic driver file |
| NWC | Audio Files | NoteWorthy Composer File |
| NWC | 3D Graphics Files | |
| NWC | CAD Files | Navisworks Cache File |
| NWD | CAD Files | Navisworks Document |
| NWF | CAD Files | Navisworks File Set |
| NWF | Audio Files | Nero WaveEditor file |
| NWM | Miscellaneous Files | Sony NWM Display Screen File |
| NWP | Miscellaneous Files | |
| NWP | Audio Files | |
| NWP | Data Files | |
| NWP | Miscellaneous Files | NEO Content File |
| NWS | Data Files | Windows Live Mail Newsgroup File |
| NWS | Data Files | Creatacard file |
| NWV | Settings Files | Dragon NaturallySpeaking User Archive |
| NXB | Data Files | Nexus race file |
| NXC | Programming Files | Not eXactly C Source Code File |
| NXG | Web Files | eSite Builder NXG Web Page |
| NY | Plugin Files | Audacity Nyquist Plug-in |
| NYF | Database Files | myBase Database File |
| NZB | Web Files | NewzBin Usenet Index File |
Open File Support
PC Tuneup Maestro with open file support will enable your PC to open more than 6,000 file types, with just a couple clicks.