| .ARY | Hewlett-Packard | Developer Files | SmartStart Scripting Toolkit Data | SmartStart | Hewlett-Packard |
| .BCK | Hewlett-Packard | Backup Files | VMX Backup File | OpenVMS | Hewlett-Packard |
| .CVA | Hewlett-Packard | Settings Files | HP SSM Information File | HP System Software Manager (SSM) | Hewlett-Packard |
| .EDL | Avid Technology | Video Files | Edit Decision List File | NonStop ASAP | Hewlett-Packard |
| .FBW | Hewlett-Packard | Backup Files | HP Recovery Manager Backup File | HP Recovery Manager | Hewlett-Packard |
| .FPR | Hewlett-Packard | Data Files | Audit Workbench Project | Fortify Static Code Analyzer | Hewlett-Packard |
| .FWI | Hewlett-Packard | Uncommon Files | PhotoSmart 850 Digital Camera File | PhotoSmart 850 Digital Camera | Hewlett-Packard |
| .HLB | Hewlett-Packard | Data Files | VMS / VAX Help Library | OpenVMS | Hewlett-Packard |
| .HP8 | Hewlett-Packard | Uncommon Files | NewWave Write Text File | HP NetWave Write | Hewlett-Packard |
| .HPF | IBM | Developer Files | High Performance Fortran File | HP9100A Emulator | Hewlett-Packard |
| .IDI | Hewlett-Packard | System Files | EVA Controller Event Log | Enterprise Virtual Array | Hewlett-Packard |
| .LJ | Hewlett-Packard | Graphic Files | HP LaserJet Graphic | HP LaserJet Driver | Hewlett-Packard |
| .LKG | Hewlett-Packard | Settings Files | HP-UX Configuration Data | HP-UX 11i Web Server Suite | Hewlett-Packard |
| .LSI | Hewlett-Packard | Data Files | Xerox Lightscribe Label | LightScribe Template Labeler | Hewlett-Packard |
| .LSL | Corel | Data Files | Corel Paradox File | LightScribe Template Labeler | Hewlett-Packard |
| .LST | Unknown Developer | Text Files | Data List | LightScribe Template Labeler | Hewlett-Packard |
| .MLB | Avanquest Software | Data Files | MyLabel Designer Deluxe Project File | OpenVMS | Hewlett-Packard |
| .OID | Hewlett-Packard | Data Files | HP ProCurve Manager Network Device File | HP ProCurve Manager | Hewlett-Packard |
| .OMS | Hewlett-Packard | Settings Files | HP Printer Substrate Presets Package File | HP Embedded Web Server | Hewlett-Packard |
| .PSF | Adobe Systems Incorporated | Settings Files | Photoshop Proof Settings File | HP-UX 11i Web Server Suite | Hewlett-Packard |
| .PVM | Parallels | Disk Image Files | Parallels Virtual Machine | HP Image Zone | Hewlett-Packard |
| .RFU | Hewlett-Packard | Data Files | Remote Firmware Update | HP Remote Firmware Update | Hewlett-Packard |
| .SL | SourceForge | Settings Files | Unix Software License File | HP-UX 11i Web Server Suite | Hewlett-Packard |
| .SOM | Corel | Data Files | Corel Paradox Sort Information | HP-UX 11i Web Server Suite | Hewlett-Packard |
| .TASK | Hewlett-Packard | Data Files | HP Printer Utility Task Plugin File | HP Printer Utility (for Mac) | Hewlett-Packard |
| .TJF | Hewlett-Packard | Backup Files | VAXTPU Backup | OpenVMS | Hewlett-Packard |
| .TLB | Various Developers | Text Files | VAX Text Library | OpenVMS | Hewlett-Packard |
| .TR5 | Onyx Computing | Graphic Files | OnyxTree Professional Data | HP Content Manager | Hewlett-Packard |
| .TRB | Hash | Plugin Files | Animation Master Turbulence Plug-in | HP Printer Utility (for Mac) | Hewlett-Packard |
| .USL | Hewlett-Packard | Font Files | LaserJet Landscape Font File | HP LaserJet Driver | Hewlett-Packard |
| .WLM | Pierre-Emmanuel Gougelet | Raster Image Files | CompW Image Format File | HP-UX 11i Web Server Suite | Hewlett-Packard |
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