| nsr | EMC NetWorker Directive File |
| nsr | Nessus Security Report Data |
| nsr | Nikon Capture Resolution Data |
| nst | Lotus Notes Template Data |
| nst | NeuraLynx Spike Timestamps Data |
| nsw | EditTools Never Spell Word Data |
| nsx | Apollo HiPer-SIx Database Index |
| nsx | Synology DiskStation Manager Exported Note |
| nsz | NVIDIA nTune Benchmark Data |
| nt2 | NinjaTrader Level 2 Market Replay Data |
| nt3 | JB BAHN Layout Data |
| 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 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 |
| nts | NeuraLynx Single Stereotrode Data |
| ntt | NeuraLynx Single Tetrode Data |
| ntv | PatternSmith Native |
| ntw | Lode Data DA Network |
