NAN
Nanoscope files (Raw Grayscale)
NAP
Metafile (NAP)
NAP
Video file (EnerGraphics)
NB
Text file (Nota Bene)
NC
Instructions for numerical control machine (CAMS)
NCB
Developer Studio file (Microsoft)
NCC
CNC (Computer Numeric Control) file (CamView 3D)
NCD
Change directory (Norton)
NCF
Command File (Netware)
NCF
Internal clipboard (Lotus Notes)
NDB
Network database (Intellicom)
NDO
3D low-polygon modeler (Nendo)
NDX
Index file (dBase II-III-IV)
NDX
Database file (1ACT! for Microsoft Windows)
NEO
Raster graphics (Atari Neochrome)
NES
Emulator ROMS for game console (Nintendo)
NET
Network configuration file
NET
Netlist output file (Orcad Schematic Capture)
netCDF
Network Common Data Form
NEW
New info
NFF
Neutral File Format
NFO
Info file database
NFO
Infobase file (Folio)
NFT
Template file (Netobject Fusion)
NG
Online documentation database (Norton Guide)
NIL
Icon Library file (EasyIcons-compatible) (Norton)
NIST
Audio (NIST Sphere)
NLB
Data (Oracle 7)
NLM
Loadable Module (Netware)
NLS
National Language Support file used for localization (for example, by Uniscape)
NLU
E-Mail Trigger file (Norton LiveUpdate)
NLX
Form (FormWorx 3.0)
NOD
File (Netobject Fusion)
NP
Project schedule (Nokia Planner)
NP
Project schedule (Visual Planner 3.x)
NPI
Source for interpreter (dBase Application Generator)
NSF
Database (Lotus Notes)
NSO
Document file (NetObject Fusion)
NST
Music module (MOD) (Noise Tracker)
NS2
Database (Lotus Notes version 2)
NT
Startup files (Microsoft Windows NT)
NTF
Database template (Lotus Notes)
NTR
Executable ASCII text file
NTS
Tutorial (Norton)
NTS
Executable ASCII text file
NTX
Index file (CA-Clipper)
NUF
Message for new users (1st call) (Procomm Plus)
NWC
Song file (Noteworthy Composer)
NWS
News message (MIME RFC822) (Microsoft Outlook Express)
NXT
Sound file (NeXT)