| File Extension: | HHC |
| File Type Description: | HTML Help Table Of Contents |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft HTML Help Workshop |
| Primary Software Developer: | Microsoft Corporation |
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Microsoft HTML Help Workshop is the primary software program that utilizes the HTML Help Table Of Contents file, originally developed by Microsoft Corporation. Internal website statistics show that HHC files are most popular with users in China and those running the Windows 10 operating system. In most cases, these users are surfing the internet using the Google Chrome browser.
 | Microsoft HTML Help Workshop by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .EVTX | Microsoft Corporation | System Files | Windows 7 Event Log File |
| .PCS | Pfaff | CAD Files | Pfaff Embroidery File |
| .SWP | Microsoft Corporation | System Files | Swap File |
| .MST | Corel | Settings Files | Corel Presentations Master Template File |
| .DGSL | Microsoft Corporation | Developer Files | Microsoft Visual Studio Visual Shader Graph File |
| .EPT | Adobe Systems Incorporated | Uncommon Files | Adobe Encapsulated PostScript Interchange Format With TIFF Preview |
| .CRW | Canon Inc. | Camera Raw Files | Canon Raw CIFF Image File |
| .OGX | Xiph.Org | Video Files | Ogg Vorbis Multiplexed Media File |
| .OHP | Microsoft Corporation | Data Files | MS-DOS 7 File |
| ._SLN71 | Microsoft Corporation | Data Files | Microsoft Visual Studio File |
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