| njt | Nero BackItUp Job Template |
| nk2 | Microsoft Outlook 2002 Auto Complete Nick List |
| nka | NI Abbey Road Drummer Data |
| nkd | Nikon ViewNX Thumbnail Cache |
| nkg | Native Instruments Kontakt Groups |
| nkjv | theWord New King James Version Module |
| nksc | Nikon Capture NX-D Sidecar Data |
| nksf | Native Kontrol Standard Presets Library |
| nksn | Native Instruments Kontakt Settings |
| nkv | PLDA Shared Model |
| nl | AMPL NL Problem File |
| nlang3 | Ashampoo Internet Accelerator Localisation Data |
| nlb | Oracle Locale Builder Binary File |
| nlc | Nero Linux Compilation |
| nld | Norland Image Format File |
| nlf | ClickTracks Normalized Log File |
| nlf | MicroSim PCBoard Netlist |
| nlg | Nestopia Language Data |
| nlk | Microsoft Outlook 2003 E-mail Cookies Data |
| nlo | Lotus Notes Linked Object |
| nlogo | NetLogo Model |
| nlogo3d | NetLogo 3D Model |
| nlp | NirLauncher Package |
| nlr | NLREG Nonlinear Regression Control Data |
| nls | National Language Support |
| nlt | Oracle Locale Builder Text File |
| nlv | Nikon Capture LHC Editor File |
| nly | CBS CheckWriter NonCalc Layout |
| nm | RM Number Magic Document |
| nm2 | Navitel v3 Map |
| nm3 | Navitel v5 Map |
| nm7 | Navitel Navigator v7 Map |
| nmb | Samba NetBIOS Name Server Log |
| nmbd | Samba NetBIOS Name Server Log |
| nmdb | NoiseMap Database |
