| eid | eID Middleware Data File |
| eif | Envex Import Format File |
| eig | Easy Index Generator Data File |
| eik | EIKON LogicBuilder Data |
| 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 |
| el4 | Canon Easy-PhotoPrint EX Calendar File |
| el5 | Canon Easy-PhotoPrint EX Layout File |
| el6 | Canon Easy-PhotoPrint EX Photo Print File |
| ele | Zemax Element Drawing Settings |
| elf | Gamecube Executable ELF |
| elg | ENABLE Activity Log |
| elg | BallotTrax Eligible List |
| ell | Silvaco Expert Layer List |
| elm | Microsoft Frontpage Theme Package |
| eln | Blackboard Collaborate Notes File |
| elo | ELO Rater Data |
| elog | McAffee Firewall Log |
| elp | Elluminate Plan! Session Plan |
| elp | eXe Learning Package File |
| elpx | Elluminate Plan! Session Plan |
| elr | MDSS Electronic Laboratory Report |
| els | MSC Patran Element Result |
| elt | NEPLAN Topology Data |
| ely | Elyse Database |
| elz | Crossword Power Tools Diagrams+ Library |
| em | Adobe Encore Menu Template |