| 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 | Project64 Saved Game Data |
| eet | Enlightenment EET Data File |
| eex | Oracle BI Discoverer EUL Export |
| ef | Diploma Exam File |
| efb | EVS Binary Compressed Field Data |
| efcl | Hytera CPS Encrypted Feature License Data |
| efd | EARS Filter Definition |
| eff | EVS Field Data |
| effect | Serato DJ Audio Effect Data |
| efg | Gambit Extensive Game Format File |
| efif | Picsel eFIF Data |
| efl | Encryptafile Encrypted File |
| efo | EASE Focus Data File |
| efrm | 4D Database for Mac Apply Formula Data |
| 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 |
| egt | EagleGet Data |
| egv | Canon Easy Guide Viewer Data |
| eh | CIRS Employment History Data |
| ehd | ASL EYEHEAD Data |