| Extension | File Description |
| .NEP | Uncommon Files |
| .NEPPRJ | Uncommon Files |
| .NEQ | Uncommon Files |
| .NER | Uncommon Files |
| .NETCDF | Uncommon Files |
| .NETMODULE | Uncommon Files |
| .NEUALL2 | Uncommon Files |
| .NEUCHEAT1 | Uncommon Files |
| .NEV | Uncommon Files |
| .NEW | Uncommon Files |
| .NEWFONT | Uncommon Files |
| .NEWORDER | Uncommon Files |
| .NEWPLR | Uncommon Files |
| .NEWS | Uncommon Files |
| .NEWSLETTER | Uncommon Files |
| .NEWTECH | Uncommon Files |
| .NEX | Uncommon Files |
| .NEXTURN | Uncommon Files |
| .NEY | Uncommon Files |
| .NEZ | Uncommon Files |
| .NF | Uncommon Files |
| .NF0 | Uncommon Files |
| .NF1 | Uncommon Files |
| .NF2 | Uncommon Files |
| .NF3 | Uncommon Files |
| .NF4 | Uncommon Files |
| .NF5 | Uncommon Files |
| .NF6 | Uncommon Files |
| .NF7 | Uncommon Files |
| .NF8 | Uncommon Files |
| .NF9 | Uncommon Files |
| .NFA | Uncommon Files |
| .NFD | Uncommon Files |
| .NFE | Uncommon Files |
| .NFG | Uncommon Files |
| .NFH | Uncommon Files |
| .NFJ | Uncommon Files |
| .NFK | Uncommon Files |
| .NFN | Uncommon Files |
| .NFP | Uncommon Files |
| .NFQ | Uncommon Files |
| .NFR | Uncommon Files |
| .NFS | Uncommon Files |
| .NFT | Uncommon Files |
| .NFU | Uncommon Files |
| .NFV | Uncommon Files |
| .NFW | Uncommon Files |
| .NFX | Uncommon Files |
| .NFY | Uncommon Files |
| .NFZ | Uncommon Files |
| .NG | Uncommon Files |
| .NG0 | Uncommon Files |
| .NG1 | Uncommon Files |
| .NG2 | Uncommon Files |
| .NG3 | Uncommon Files |
| .NG4 | Uncommon Files |
| .NG5 | Uncommon Files |
| .NG6 | Uncommon Files |
| .NG7 | Uncommon Files |
| .NG8 | Uncommon Files |
| .NG9 | Uncommon Files |
| .NGA | Uncommon Files |
| .NGB | Uncommon Files |
| .NGC | Uncommon Files |
| .NGE | Uncommon Files |
| .NGF | Uncommon Files |
| .ngfile | Uncommon Files |
| .NGG | Uncommon Files |
| .NGH | Uncommon Files |
| .NGI | Uncommon Files |
| .NGJ | Uncommon Files |
| .NGK | Uncommon Files |
| .NGL | Uncommon Files |
| .NGM | Uncommon Files |
| .NGN | Uncommon Files |
| Extension | File Description |
| .NGO | Uncommon Files |
| .NGQ | Uncommon Files |
| .NGR | Uncommon Files |
| .NGS | Uncommon Files |
| .NGT | Uncommon Files |
| .NGU | Uncommon Files |
| .NGV | Uncommon Files |
| .NGW | Uncommon Files |
| .NGX | Uncommon Files |
| .NGY | Uncommon Files |
| .NGZ | Uncommon Files |
| .NH | Uncommon Files |
| .NH0 | Uncommon Files |
| .NH1 | Uncommon Files |
| .NH2 | Uncommon Files |
| .NH3 | Uncommon Files |
| .NH4 | Uncommon Files |
| .NH5 | Uncommon Files |
| .NH6 | Uncommon Files |
| .NH7 | Uncommon Files |
| .NH8 | Uncommon Files |
| .NH9 | Uncommon Files |
| .NHA | Uncommon Files |
| .NHB | Uncommon Files |
| .NHC | Uncommon Files |
| .NHD | Uncommon Files |
| .NHE | Uncommon Files |
| .NHF | Uncommon Files |
| .NHG | Uncommon Files |
| .NHH | Uncommon Files |
| .NHI | Uncommon Files |
| .NHJ | Uncommon Files |
| .NHK | Uncommon Files |
| .NHL | Uncommon Files |
| .NHM | Uncommon Files |
| .NHN | Uncommon Files |
| .NHO | Uncommon Files |
| .NHP | Uncommon Files |
| .NHQ | Uncommon Files |
| .NHR | Uncommon Files |
| .NHS | Uncommon Files |
| .NHT | Uncommon Files |
| .NHU | Uncommon Files |
| .NHV | Uncommon Files |
| .NHW | Uncommon Files |
| .NHX | Uncommon Files |
| .NHY | Uncommon Files |
| .NHZ | Uncommon Files |
| .NI | Uncommon Files |
| .NI0 | Uncommon Files |
| .NI1 | Uncommon Files |
| .NI2 | Uncommon Files |
| .NI3 | Uncommon Files |
| .NI4 | Uncommon Files |
| .NI5 | Uncommon Files |
| .NI6 | Uncommon Files |
| .NI7 | Uncommon Files |
| .NI8 | Uncommon Files |
| .NI9 | Uncommon Files |
| .NIA | Uncommon Files |
| .NIC | Uncommon Files |
| .NICHOLS | Uncommon Files |
| .NICO | Uncommon Files |
| .NID | Uncommon Files |
| .NIE | Uncommon Files |
| .NIFF | Uncommon Files |
| .NIG | Uncommon Files |
| .NIGHT | Uncommon Files |
| .NIGHTS | Uncommon Files |
| .NIH | Uncommon Files |
| .NII | Uncommon Files |
| .NIJ | Uncommon Files |
| .NIK | Uncommon Files |
| .NIL | Uncommon Files |
| .NIM | Uncommon Files |
