| esk | eSignal Scan Data |
| esk | Longplay Vesa File |
| eskin | Emperor Media Player Skin Data |
| esl | Everest Authoring System Screen Library |
| eslock | ES File Explorer Encrypted Data |
| eslog | EggShell Log |
| esn | Windows XP Cache Data |
| eso | EnergyPlus Simulation Output |
| esobi | NewsXpresso Data |
| esp | ACD/Labs Dataset |
| esp | Corel Ventura Publisher ESP Data |
| esp | Email Sentinel Pro Email Attachment |
| esp | EnSpectr Raport Data |
| esp | ESPlanner Data |
| esp | Gamebryo Engine Plugin |
| espass | Electronic smartPass Data |
| esq | 3D Embroidery Sequence Data |
| esql | IBM Integration Bus Module |
| esr | 4D Database External |
| ess | Ekahau Site Survey Binary Container |
| ess | eSignal Symbol Search Data |
| ess | EXP Style Sheet |
| est | EasySTONE Data |
| est | ENVI Linked Window Group Data |
| est | Streets & Trips Map Data |
| est | Webalizer Language Data |
| estg | STAR-CCM+ Geometry File |
| esw | AGTEK Earthwork 3D Data |
| esw | Turbo Smetchik Data |
| esx | Algor Simulation Legacy Model |
