| et1 | ENERGY-10 Weather Data |
| etb | Project Pluto Guide Event Table |
| etb | Micro Focus Extra! Toolbars Data |
| etb2 | Timbuktu Pro Resource Data |
| etc | eTreppid Compressed Data |
| etd | Adobe Reader EBX Transfer Data File |
| etex | eTutor Questions Data |
| etff | Encrypt4all Theme Data |
| eti | ETI Stream |
| etq | eSignal Time and Quotes Data |
| etr | eTextReader Document |
| ety | ety-python Data |
| etz | RAM Elements Model |
| eulumdat | EULUMDAT Data |
| eup | EagleUp Data |
| eus | EDonkey2000 Serverlist Tool Data |
| eut | RadiMation Equipment Under Test Data |
| ev | Echoview File |
| ev1 | Calendar Commander v1 Event File |
| ev2 | Calendar Commander v2 Event File |
| ev3 | Team Manager 2 Meet Export File |
| ev3p | Lego Mindstorms EV3 Program File |
| ev3s | Lego Mindstorms EV3 Shared File |
| evb | Echoview Bathymetric Data |
| evb | Echoview EV Backup File |
| evc | Echoview Color Scheme |
| evcd | NC-Verilog Extended VCD |
| evcs | XILS 3 Exported Presets Data |
| evd | Enigma Vector Database |
| eve | Echoview Export File |
| event | Corel Cataloged Folder |
| evi | Neuro-Expert Desired Evidences Data |
| evi | Echoview Index File |
| evl | Echoview Line File |
| evm | Kashmir 3D EVM Map Data |