| edt | NEPLAN External Program Data |
| edx | Novadigm EDM Data |
| edz | PTC Creo View ECAD Package |
| ee | CN3 Extended Ephemeris Data |
| eea | DrugPak Encrypted Email Attachment |
| eeb | Corel WordPerfect Equation Editor Buttonbar Data |
| eeg | Neuroscan EEG Data |
| eek | Arachne Network-Enabled Script |
| eel | Atmosphere IoT Embedded Element Library |
| eem | Emonitor Extraction Manager Data |
| eep | EEPROM Data |
| eep | Evidence Eliminator Data |
| eep | Project64 Saved Game Data |
| eet | Enlightenment EET Data File |
| eex | Oracle BI Discoverer EUL Export |
| ef | Diploma Exam File |
| ef2 | Internet Download Manager Exported Data |
| efb | EVS Binary Compressed Field Data |
| efc | Technics SX-KN6000 Effect Memory Data |
| efcl | Hytera CPS Encrypted Feature License Data |
| efd | EARS Filter Definition |
| efd | Parallels Desktop Data |
| efe | Altair FEKO Electric Field Strengths Data |
| eff | EVS Field Data |
| effect | Serato DJ Audio Effect Data |
| efg | Gambit Extensive Game Format File |
| efif | Picsel eFIF Data |
| efk | Effekseer Effect Data |
| efkcurve | Effekseer Curve Parameter Data |
| efkefc | Effekseer Effect Data |
