| .nav2 |
WinAVI Temporary Navigation File |
| .nk2 |
Outlook 2002 Nickname File |
| .nick |
Outlook 2000 Nickname File |
| .njb |
Nikon Photo Index File |
| .nfs |
Netflix Subtitle File |
| .ndl |
Lotus Notes Doclink File |
| .ncw |
Native Compressed Wave File |
| .ntf |
Lotus Note Template |
| .nup |
Smart Security Update File |
| .nav |
Id Tech 3 Bot Navigation File |
| .na2 |
Netscape Address Book File |
| .nvi |
NVIDIA Driver File |
| .nozzlelibrary |
Painter Nozzle Library |
| .new |
New G-Suite File |
| .nch |
Outlook Express Folder File |
| .nd5 |
Renamed NDS File |
| .otf |
OpenType Font |
| .ods |
OpenDocument Spreadsheet |
| .opdownload |
Opera Partially Downloaded File |
| .olb |
OLE Object Library |
| .odf |
OpenDocument Formula |
| .ob! |
Orbit Downloader Incomplete Download |
| .opf |
FlipAlbum File |
| .ost |
Outlook Offline Data File |