| effect | Serato DJ Audio Effect Data |
| efg | Gambit Extensive Game Format File |
| efl | Encryptafile Encrypted File |
| efo | EASE Focus Data File |
| efz | EVS GZip Compressed Field Data |
| eg | ElmerGrid Command File |
| eg2 | IBM eGatherer Collected System Configuration Information |
| ega | Editing Encog Analyst File |
| egb | Encog Binary |
| egf | Elmer Geometry File |
| egn | Daqarta External Gain Data |
| egp | Easy Grade Pro Gradebook |
| egr | EGrid32 Form |
| egv | Canon Easy Guide Viewer Data |
| eh | CIRS Employment History Data |
| ehd | ASL EYEHEAD Data |
| ehf | MicroEMACS Help |
| ehm | easyHDR Mask Data |
| ehsx | easyHDR Tone Mapping Data |
| ehtx | easyHDR List Data |
| ehv | EasyHL7 Exported Vendor Definitions |
| eia | Mazatrol EIA Control File |
| eid | eID Middleware Data File |
| eif | Envex Import Format File |
| eig | Easy Index Generator Data File |
| eil | Eagle Library Intermediate Data |
| eir | Bluetooth Extended Inquiry Response Data |
| ekb | ZMC VisualTablet Data |
| ekg | DatamedFT EKG Waveform Data |
| ekr | EEGer Data |
| eks | Metapraxis Empower Data |
| el | Echoview v1 File |
| el1 | Canon Easy-PhotoPrint EX Album |
| el2 | Canon Easy-PhotoPrint EX Stickers File |
| el3 | Canon Easy-PhotoPrint EX Data |