| npbk | NoxPlayer Backup Data |
| npc | Intuit QuickBooks Online Banking Data |
| npd | Ultra Network Sniffer Captured Data |
| npdm | Nintendo Switch ExeFS Data |
| npdoc | Newspilot Document |
| npext | Newspilot External Document |
| npf | Nick-O-Matic Design Factory NPF Data |
| npg | Magentic Data |
| nph | Xilinx ISE Physical Resources Data |
| npi | Nick-O-Matic Design Factory Data |
| npi | Nikon Capture Filter Data |
| npimg | Newspilot Image Data |
| npjob | Newspilot Job Description |
| npk | MikroTik Router OS Upgrade Package |
| npl | Allplan Engineering Plot Layout Data |
| npl | Cubase Library Data |
| npl | Dart Pro 98 Noiseprint Info |
| npl | Xilinx ISE Project |
| npn | ACDSee Canvas Neon Pen Data |
| npo | Nonpareil Redundancy Summary Output |
| nppe | Navicat for PostgreSQL Exported Table |
| nppj | Navicat for PostgreSQL Batch Job |
| npr | Lotus Notes Reporter Data |
| nps | Lotus Agenda NPS Data |
| nps | Natron Node Presets Data |
| nps | NeroMIX Data |
| nps | NTI Backup Now Partition Set |
| npsf | eXtendable Wad Editor NPSF Data |
| npt | Dart Pro 98 Noiseprint Archive Import |
| npt | NetPoint Schedule Data |
