| nopi | Navicat for Oracle Import Wizard Profile Data |
| nopj | Navicat for Oracle Batch Job |
| nops | Navicat for Oracle Structure Synchronization Data |
| nopt | Navicat for Oracle Data Transfer Profile Data |
| not | Adobe InCopy User Dictionary |
| not | MakeMusic Finale Note File |
| not | Zemax Element Drawing Note |
| note | Notability Note Data |
| notx | E-Sword v9 Study Note |
| notz | FiiNote Exported Note |
| nou | Numerical Electromagnetics Code Output |
| nov | Native Instruments Battery Data |
| novafold | NovaFold Format Data |
| novs | Novell NetWare Control Center Data |
| nox | Wave IRIS NOx Data |
| noy | NOY Backup Data |
| nozskin | WinDS PRO NOZSkin Data |
| np2 | Nikon Picture Control v2 Data |
| np3 | NP3 Compressed Nucleotide Database |
| npa | ReliaSoft Weibull++ NPA Data |
| npbk | NoxPlayer Backup Data |
| npc | Intuit QuickBooks Online Banking Data |
| npd | Ultra Network Sniffer Captured Data |
| npg | Magentic Data |
| nph | Xilinx ISE Physical Resources Data |
| npi | Nick-O-Matic Design Factory Data |
| npi | Nikon Capture Filter Data |
| npk | MikroTik Router OS Upgrade Package |
| npl | Allplan Engineering Plot Layout Data |
| npl | Cubase Library Data |
