| el4 | Canon Easy-PhotoPrint EX Calendar File |
| el5 | Canon Easy-PhotoPrint EX Layout File |
| el6 | Canon Easy-PhotoPrint EX Photo Print File |
| elc | EETrack Location Data |
| ele | Zemax Element Drawing Settings |
| elf | Gamecube Executable ELF |
| elg | BallotTrax Eligible List |
| elg | ENABLE Activity Log |
| eli | Elematic ELiPLAN Data |
| ell | Silvaco Expert Layer List |
| elm | Microsoft Frontpage Theme Package |
| elmt | QElectroTech Element Data |
| eln | Blackboard Collaborate Notes File |
| elo | ELO Rater Data |
| eloc | EEGLAB Location Data |
| elog | McAffee Firewall Log |
| elp | eXe Learning Package File |
| elp | Polhemus 3D Location Data |
| elp | Elluminate Plan! Session Plan |
| 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 | PCEM Electromask Data |
| em | Adobe Encore Menu Template |
| em$ | Bitware Data |
| em4 | AEM EMS-4 Data |
| em8 | AEM 8860 Engine Management Computer Data |