| ewu | Embedded Wizard Unit |
| eww | IAR System Workspace Data |
| ex | Euphoria Source Code |
| ex2 | ParaView Exodus II Mesh Data |
| ex4 | MQL4 Compiled Modules |
| ex5 | MetaTrader 5 Program |
| exe_ | Emu8086 Assembly Source Code |
| exml | Tizen Effect Model |
| exob | WeintekHMI EasyBuilder Pro Compiled Project |
| exsd | Eclipse Extension Point Schema |
| ext | Visual Studio .NET DB Project Extended Properties |
| exu | Euphoria Database |
| exu | Euphoria Shrouded Source Code |
| exu | Euphoria Source Code |
| exv | Adobe Extension Script |
| exw | Euphoria Database |
| exw | Euphoria Shrouded Source Code |
| exw | Euphoria Source Code |
| ey | Engine Yard Project Configuration |
| eze | ErZorScript Source Code |
| ezg | EZGraphs Source Code |
| f | Forth Source Code |
| f | Fortran Source Code |
| f | GCC Flags Data |
| f | Win32Forth Source Code |
| f4 | Fortran IV Source Code |
| f40 | PDP-10 Fortran-4 Source Code |
| f77 | Fortran Source Code |
| f90 | Fortran Source Code |
| f95 | Fortran 95 Source Code |
| facefx | FaceFX Actor File |
| facefx_ingame | FaceFX In-Game Actor Data |
| faces | FacesServlet Page |
| factor | Factor Source Code |
| fal | Falcon Script |
