| exo | Motorola EXORmacs Data |
| exp | Affymetrix Experiment File |
| extra | BreakPad Crash Log Extra Data |
| extrep | Sage External Representation |
| extz | Extron PCS Configuration Backup |
| exx | IBM Linkway MsgPut Data |
| ex_ | Compressed EXE File |
| eyd | ASL EYE-TRAC PC Data |
| eyetvp | EyeTV Recording Metadata |
| eyetvsched | EyeTV Schedule Data |
| ezc | Autodesk AutoCAD ecscad Component Backup |
| ezd | WSxM Image Data |
| ezl | EasyLog Log Record |
| ezlog | Skype Extras Manager Log |
| ezm | EasyOffice Mail Data |
| eztut | Logitech Harmony Tutor Data |
| ezup | Logitech Harmony Firmware Upgrade |
| f01 | HEC-RAS Flow File |
| f02 | HEC-RAS Flow File |
| f03 | HEC-RAS Flow File |
| f04 | HEC-RAS Flow File |
| f05 | HEC-RAS Flow File |
| f06 | HEC-RAS Flow File |
| f06 | Nastran ASCII Results |
| f07 | HEC-RAS Flow File |
| f08 | HEC-RAS Flow File |
| f09 | HEC-RAS Flow File |
| f10 | HEC-RAS Flow File |
| f2b | ProntoGERBER-CONNECTION Single Board Database |
| f2f | Byteworx FMEA Exported Data |
| f3b | Metaio Creator 3D Map |
| f3s | Faro SCENE 3D Laser Scanner Data |
| f99 | HEC-RAS Flow File |
| fa | FASTA Sequence |
| facet | Facet Data File |
