| nsw | EditTools Never Spell Word Data |
| nsx | Apollo HiPer-SIx Database Index |
| nt2 | NinjaTrader Level 2 Market Replay Data |
| nt3 | JB BAHN Layout Data |
| ntar | Network Trace And Retrieval Dump |
| ntb | Tecplot License Data |
| ntd | NinjaTrader Database |
| nte | Holonote Note |
| ntf | Lotus Notes Template |
| ntfp | Nitro File Palette |
| ntft | Nitro File Tiles |
| ntg | NTGsim Data |
| ntk | Nortek Vectrino Profiler Data |
| ntm | Navitel 2.0 Map |
| ntm | NinjaTrader Market Replay Data |
| nto | NTOScanner Data |
| ntr | Netrun Executable List |
| ntv | PatternSmith Native |
| ntw | Lode Data DA Network |
| ntx | Clipper Database Index |
| ntz | InVircible Antivirus Directory Integrity Information Data |
| nu3 | Norton Utilities Backup Data |
| nu4 | Norton Utilities DLL Root Data |
| nub | Xerox FreeFlow NUB Init Data |
| nuc | PAML Sequence Data |
| nuf | Symantec Procomm Plus New User Message Data |
| nugg | SAPLink Nugget Data |
| num | Nikon Capture Unsharp Mask |
| nus | NuShell Input |
| nv | NewViews Database |
