| ewc2 | EDIUS Waveform Cache |
| ewd | Enigma Flight Planner Database |
| ewd3 | InstallShield Internal Data |
| ewf | EnCase Expert Witness Compression Format Data |
| ewnet | Electronics Workbench Ultiboard Netlist Data |
| ews | EasyWorship Schedule Data |
| ewsx | EasyWorship Schedule Data |
| exa | TINA Task List |
| exam | ProfExam Exam Data |
| examcards | Philips MRI ExamCards Data |
| exar | Siemens MRI Protocol Data |
| exar1 | Siemens MAGNETOM Prisma Protocol Data |
| exb | EverNote Database |
| exc | Microsoft Word Exclude Dictionary |
| exc | SmartWare Dictionary EXC Data |
| exclude | WOW! Diagnostic Exclude Data |
| exd | JSDAI Express Dictionary Data |
| exd | Microsoft Office Control Information Cache |
| exf | ExactFile Checksum Digest |
| exf | EXIF Metadata |
| exg | JSDAI Express-G Data |
| exhibeo | Exhibeo Photo Gallery |
| exi | Efficient XML Interchange Data |
| exif | EXIF Metadata |
| exm | Exam Document |
| exo | Motorola EXORmacs Data |
| exp | Affymetrix Experiment File |
| exp | CATIA Exported Data |
| exp | RMCProfile GSAS EXP Data |
| exportedfavorites | Transmit Exported Favorites |
| expressionmap | Cubase Expression Map |
| exprwdconfig | Microsoft Expression Web XML Configuration |
| exprwdcss | Microsoft Expression Web CSS Data |
| exprwdjs | Microsoft Expression Web Javascript |
| exprwdnav | Microsoft Expression Web Navigation Data |
