| ef | Diploma Exam File |
| ef2 | Internet Download Manager Exported Data |
| efb | EVS Binary Compressed Field Data |
| efcl | Hytera CPS Encrypted Feature License Data |
| efd | EARS Filter Definition |
| 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 |
| efl | Encryptafile Encrypted File |
| efo | EASE Focus Data File |
| efp | Microsoft Exchange Forms Designer Template |
| efrm | 4D Database for Mac Apply Formula Data |
| efs | eSignal Formula Script |
| 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 |
| egtree | EventGhost Tree Data |
| egv | Canon Easy Guide Viewer Data |
| eh | CIRS Employment History Data |
| ehd | ASL EYEHEAD Data |
| ehf | MicroEMACS Help |
| ehi | TOPOG Erosion Hazard Index Data |
| ehm | easyHDR Mask Data |
| ehsx | easyHDR Tone Mapping Data |
| ehtx | easyHDR List Data |
| ehv | EasyHL7 Exported Vendor Definitions |
