| nt3 | JB BAHN Layout Data |
| nt6 | Orchida Knitting System Universal Flat Knitting Pattern |
| nt8bk | NinjaTrader Database Backup |
| ntar | Network Trace And Retrieval Dump |
| ntb | Tecplot License Data |
| ntbk | NinjaTrader Database Backup |
| ntd | NinjaTrader Database |
| nte | Holonote Note |
| ntf | Lotus Notes Template |
| ntfp | Nitro File Palette |
| ntft | Nitro Tiles File |
| ntg | NTGsim Data |
| nth | ImageMagick VisualMagick JBIG Image |
| ntk | Nortek Vectrino Profiler Data |
| ntm | Navitel 2.0 Map |
| ntm | NinjaTrader Market Replay Data |
| nto | NTOScanner Data |
| ntr | Netrun Executable List |
| nts | NeuraLynx Single Stereotrode Data |
| ntt | NeuraLynx Single Tetrode Data |
| ntv | PatternSmith Native |
| ntw | Lode Data DA Network |
| ntx | CARIS Marine Navigation Data |
| ntx | Clipper Database Index |
| ntx | theWord Encrypted New Testament Text Module |
| ntx | yEnc32 Encoded Data |
| ntz | InVircible Antivirus Directory Integrity Information Data |
| nu3 | Norton Utilities Backup Data |
| nu4 | Norton Utilities DLL Root Data |
| nub | Xerox FreeFlow NUB Init Data |
