| dvprj | Deja Vu X4 Translation Project |
| dvproj | Deja Vu X3 Project |
| Vivia Project |
| dvr | DV Rack Project |
| dvz | Quick Devis Project |
| dwj | Dynamic Submission Project File |
| dwp | DarkWave Studio Project |
| dwproj | DataWindow Designer Project |
| Visual Studio SQL Server Analysis Services Project |
| dwz | Corel DVD MovieFactory Project |
| dxoproj | DxO Optics Pro Project |
| dxstudio | DX Studio Project |
| dzep | Cyberlink PowerDirector Effect Extractor Project |
| dzprj | Deep Zoom Composer Project |
| e3a | Carrier HAP Project |
| Hourly Analysis Program HVAC Project Archive |
| e3d | SolidWorks Instant3D Project |
| e3p | E3.series Mechanical Part Data |
| e3s | E3.series Project |
| e3w | E3.WireWorks Project |
| eap | Enterprise Architect Project |
| eapx | Enterprise Architect 14 Project |
| eb | EBwin Project |
| ebc | MediaBASIC Compiled Project |
| ebkproj | eCub Project |
| ebp | Baseball Playbook Project |
| NCH Express Burn Project |
| ec3 | Epson Print CD v3 Project |
| ec4 | Epson Print CD v4 Project |
| ecp | EasyC Project |
| ecpx | EasyC v4 Project |
| ecs4 | Easy Cut Studio 4 Project |
| eddx | Edraw Max Project |
| edf | Edificius Project |
| edge | Adobe Edge Project |
| efkproj | Effekseer Project |
| eggp | Adobe After Effects Project |
| ehp | Help Steward Project |
| ehpx | easyHDR Project |
| eis | EIS Spectrum Analyser Project |
| emmx | Edraw MindMaster XML Project |
| emp | AWR Design Environment Project |
| emproject | Segger Embedded Studio Project |
| emtp | WeintekHMI EasyBuilder Pro Project |
| env | Creatacard Envelope Project |
| eox | EON Studio Project |
| epf | EAGLE Project |
| epj | EDIUS Project |
| RapidSQL SCCS Project |
| epp | EditPad Pro Project |
| eprj | PG4UW Project |
| eqm | Electric Quilt Mini Project |
| ersy | Eraser Project |
| es | ESwin Project |
| esc | EasySignCut Pro Project |
| esp3 | Easy Sketch Pro 3.0 Project |
| esproj | Espresso Project |
| etbp | eTextbookCreator Project |
| etp | Enterprise Template Project |
| ev3 | Lego Mindstorms EV3 Project |
| evproj | EV Studio Project |
| ewp | eCommerce Website Builder Project |
| Ewisoft Website Builder Project |
| IAR System Project |
| ewprj | Electronics Workbench Ultiboard Project |
| ewt | IAR System Project Backup |
| exi | exSILentia Project |
| exp | JSDAI Express Project |
| ezp | Autodesk AutoCAD ecscad Project Backup |
| EDIUS Compressed Project |
| ezpt | EDIUS Project Template |
| ezy | TI bqEASY Project |
| f3z | Autodesk Fusion 360 Shared Project Archive |
| fabbproject | netfabb Basic Project |
| fap | ACD FotoAngelo Project |
| fbp3 | FinalBuilder v3 Project |
| fbp4 | FinalBuilder v4 Project |
| fbp5 | FinalBuilder Project |
| fbp6 | FinalBuilder Project |
| FinalBuilder v6 Project |
