| Extension | File Description |
| .EPU | Uncommon Files |
| .EPUB | Data Files |
| .EPV | Uncommon Files |
| .EPW | Data Files |
| .EPX | Uncommon Files |
| .EPY | Uncommon Files |
| .EPZ | Uncommon Files |
| .EQ0 | Uncommon Files |
| .EQ1 | Uncommon Files |
| .EQ2 | Uncommon Files |
| .EQ3 | Uncommon Files |
| .EQ4 | Uncommon Files |
| .EQ5 | Uncommon Files |
| .EQ6 | Uncommon Files |
| .EQ7 | Uncommon Files |
| .EQ8 | Uncommon Files |
| .EQ9 | Uncommon Files |
| .EQA | Uncommon Files |
| .EQB | Uncommon Files |
| .EQC | Uncommon Files |
| .EQD | Uncommon Files |
| .EQE | Uncommon Files |
| .EQF | Settings Files |
| .EQG | Uncommon Files |
| .EQH | Uncommon Files |
| .EQI | Uncommon Files |
| .EQJ | Uncommon Files |
| .EQK | Uncommon Files |
| .EQL | Settings Files |
| .EQM | Uncommon Files |
| .EQN | CAD Files |
| .EQO | Uncommon Files |
| .EQP | Settings Files |
| .EQQ | Uncommon Files |
| .EQR | Uncommon Files |
| .EQS | Uncommon Files |
| .EQT | Uncommon Files |
| .EQU | Uncommon Files |
| .EQUATES | Uncommon Files |
| .EQUILIBFON | Uncommon Files |
| .EQUS | Uncommon Files |
| .EQV | Uncommon Files |
| .EQW | Uncommon Files |
| .EQX | Uncommon Files |
| .EQY | Uncommon Files |
| .EQZ | Uncommon Files |
| .ER | Uncommon Files |
| .ER0 | Uncommon Files |
| .ER1 | Data Files |
| .ER2 | Uncommon Files |
| .ER3 | Uncommon Files |
| .ER4 | Uncommon Files |
| .ER5 | Uncommon Files |
| .ER6 | Uncommon Files |
| .ER7 | Uncommon Files |
| .ER8 | Uncommon Files |
| .ER9 | Uncommon Files |
| .ERA | Uncommon Files |
| .ERASURE | Uncommon Files |
| .ERB | Developer Files |
| .ERC | Uncommon Files |
| .ERD | Uncommon Files |
| .ERE | Uncommon Files |
| .ERF | Game Files |
| .ERG | Uncommon Files |
| .ERH | Uncommon Files |
| .ERI | Uncommon Files |
| .ERIC | Uncommon Files |
| .ERJ | Uncommon Files |
| .ERK | Uncommon Files |
| .ERL | Misc Files |
| .ERM | Uncommon Files |
| .ERN | Uncommon Files |
| .ERO | Uncommon Files |
| .ERP | Game Files |
| Extension | File Description |
| .ERQ | Uncommon Files |
| .ERR | Text Files |
| .ERROR | Uncommon Files |
| .ERRORS | Uncommon Files |
| .ERS | GIS Files |
| .ERT | Uncommon Files |
| .ERU | Uncommon Files |
| .ERV | Uncommon Files |
| .ERW | Uncommon Files |
| .ERWIN | Uncommon Files |
| .ERX | Uncommon Files |
| .ERY | Uncommon Files |
| .ERZ | Uncommon Files |
| .ER_ | Uncommon Files |
| .ES | Data Files |
| .ES0 | Uncommon Files |
| .ES1 | Uncommon Files |
| .ES2 | Uncommon Files |
| .ES3 | Video Files |
| .ES4 | Uncommon Files |
| .ES5 | Uncommon Files |
| .ES6 | Uncommon Files |
| .ES7 | Uncommon Files |
| .ES8 | Uncommon Files |
| .ES9 | Uncommon Files |
| .ESA | Uncommon Files |
| .ESB | Data Files |
| .ESC | Uncommon Files |
| .ESD | Uncommon Files |
| .ESE | Uncommon Files |
| .ESF | Uncommon Files |
| .ESFORM | Uncommon Files |
| .ESG | Game Files |
| .ESH | Executable Files |
| .ESI | Uncommon Files |
| .ESJ | Uncommon Files |
| .ESK | Uncommon Files |
| .ESKIN | Uncommon Files |
| .ESL | Uncommon Files |
| .ESM | Game Files |
| .ESN | Uncommon Files |
| .ESO | Uncommon Files |
| .ESP | Data Files |
| .ESPS | Audio Files |
| .ESQ | Uncommon Files |
| .ESR | Uncommon Files |
| .ESS | Game Files |
| .EST | GIS Files |
| .ESTIMATE | Uncommon Files |
| .ESU | Uncommon Files |
| .ESV | Uncommon Files |
| .ESW | Uncommon Files |
| .ESX | Data Files |
| .ESY | Uncommon Files |
| .ESZ | Uncommon Files |
| .ES_ | Uncommon Files |
| .ET | Data Files |
| .ET0 | Uncommon Files |
| .ET1 | Uncommon Files |
| .ET2 | Uncommon Files |
| .ET3 | Data Files |
| .ET4 | Uncommon Files |
| .ET5 | Uncommon Files |
| .ET6 | Uncommon Files |
| .ET7 | Uncommon Files |
| .ET8 | Uncommon Files |
| .ET9 | Uncommon Files |
| .ETA | GIS Files |
| .ETB | Uncommon Files |
| .ETBL | Uncommon Files |
| .ETBP | Uncommon Files |
| .ETBZ | Uncommon Files |
| .ETC | Uncommon Files |
| .ETD | Data Files |
| .ETE | Uncommon Files |
