File extensions start with character 'E'
| File Type | Category | File Format | |
|---|---|---|---|
| .e01 | Disk Image Files | EnCase Image File | |
| .e4a | Encrypted Files | Encrypt4all Archive | |
| .eap | Data Files | Enterprise Architect Project | |
| .ear | Executable Files | Java Enterprise Archive File | |
| .eas | Data Files | RSLogix Symbol File | |
| .easm | CAD Files | eDrawings Assembly File | |
| .ebq | Text Files | Standard Electronic Bills of Quantity File | |
| .ebuild | Data Files | Portage eBuild Script | |
| .ec0 | Data Files | MetroCount Traffic Data File | |
| .ec4 | Document Files | EPSON Print CD File | |
| .ecc | Data Files | dvdisaster Error Correction File | |
| .ecf | Plug-in Files | Outlook Add-in | |
| .ecl | Data Files | Management-Ware Mass Mailing News E-Campaign List | |
| .ecm | Data Files | ECM Disc Image | |
| .ecs | F-Secure Files | Sony Ericsson Phone Backup File | |
| .edat | Data Files | E-DataAid 1.x File | |
| .edat2 | Data Files | E-DataAid 2.0 File | |
| .edf | Data Files | ESRF Data File | |
| .edfx | Data Files | Estimator.NET Estimate File | |
| .edg | Data Files | Edge Diagrammer File | |
| .eep | Data Files | EEPROM Data File | |
| .efa | Audio Files | Ensoniq ASR File | |
| .efe | Audio Files | Ensoniq EPS File | |
| .efi | Windows System Files | Extensible Firmware Interface File | |
| .efk | Audio Files | Ensoniq KT File | |
| .efp | Data Files | Exchange Forms Designer Template | |
| .efq | Audio Files | Ensoniq SQ1/SQ2/KS-32 File | |
| .efs | Audio Files | Ensoniq SQ-80 File | |
| .efv | Audio Files | Ensoniq VFX-SD File | |
| .efw | Compressed Files | Renamed Zip or Executable File | |
| .efx | Data Files | eFax Document | |
| .egg | 3D Files | Panda3D Model File | |
| .egp | Data Files | Easy Grade Pro Gradebook File | |
| .eip | Camera Photo Files | Enhanced Image Package File | |
| .elf | Windows System Files | Executable and Linkable Format File | |
| .emb | Data Files | Wilcom Embroidery Design File | |
| .eml | Email Message Files | E-Mail Message | |
| .emlx | Text Files | Mail Message | |
| .emlxpart | Data Files | Mail Message Attachment | |
| .emp | Audio Files | eMusic Music Download File | |
| .emrg | Data Files | E-Merge 1.x Data File | |
| .emrg2 | Data Files | E-Merge 2.0 Data File | |
| .emulecoll | Text Files | eMule Data File | |
| .enc | Firmware Files | Encoded File | |
| .enex | XML Files | Evernote Archive | |
| .ens | Configuration Files | EndNote Style File | |
| .env | Data Files | Adobe Dictionary Data File | |
| .enw | Windows Files | EndNote Import File | |
| .eot | Font Files | Embedded OpenType Font | |
| .epf | Data Files | Edgecam Educational Part File | |
| .epk | Package Files | Metin2 Game Data Package | |
| .eps | Vector Graphics Files | Encapsulated PostScript File | |
| .epub | eBook Files | Open eBook File | |
| .err | Text Files | Error Log File | |
| .err | Text Files | FoxPro Compilation Error | |
| .err | Partially Downloaded Files | AutoCAD Error Log File | |
| .es | Data Files | E-Studio 1.x Experiment File | |
| .es2 | Data Files | E-Studio 2.0 Experiment File | |
| .esb | Data Files | Es-Builder Book File | |
| .ese | Data Files | Millions Email Generator Email List File | |
| .esp | Package Files | Fallout 3 Plugin File | |
| .esq | Data Files | Embroidery Sequence File | |
| .ess | Game Files | The Elder Scrolls Saved Game | |
| .est | GIS Files | Streets & Trips Map File | |
| .esx | Data Files | Xactimate Insurance Claims Estimate | |
| .etd | eBook Files | Adobe Reader EBX Transfer Data File | |
| .etf | Text Files | ENIGMA Transportable File | |
| .etl | Windows System Files | Microsoft Event Trace Log File | |
| .ett | Data Files | Kingsoft Spreadsheets Template | |
| .etx | Text Files | Structure Enhanced Text (Setext) File | |
| .euc | Text Files | Extended Unix Code File | |
| .euf | Font Files | Private Character Editor File | |
| .ev | Data Files | Echoview File | |
| .ev3 | Data Files | Team Manager Meet Event File | |
| .ev3 | Configuration Files | Everlock Options File | |
| .evo | Digital Video Files | HD DVD Video File | |
| .evy | Data Files | Envoy File | |
| .ews | Data Files | EasyWorship Schedule File | |
| .ex4 | Program Execution Files | MetaTrader Program File | |
| .ex_ | Program Execution Files | Compressed Executable File | |
| .exe | Program Execution Files | Windows Executable File | |
| .exif | Data Files | Exchangeable Image Information File | |
| .exl | Data Files | Export Lister File | |
| .exp | Development Files | Symbols Export File | |
| .ext | Multiple Use Files | Generic Email Attachment | |
| .extra | Multiple Use Files | Google BreakPad Crash Log Extra File | |
| .exv | Data Files | Adobe Extension Script | |
| .exx | Data Files | IBM Linkway MsgPut File | |
| .ezlog | Multiple Use Files | Skype Extras Manager Log File | |
| .ezp | CAD Files | AutoCAD Ecscad Project Backup File |