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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .HA | Ivan Zahariev | Compressed Files | HA Compressed Archive | WinRAR | Eugene Roshal |
| .HAL | HansaWorld | Compressed Files | HansaWorld Enterprise HAL Code File | HansaWorld Enterprise | HansaWorld |
| .HAP | Hamarsoft | Compressed Files | HAP Compressed File Archive | HAP | Hamarsoft |
| .HBC | Xceleon Technologies | Compressed Files | HyperBac Compressed Archive | SQL HyperBac | Redgate Software |
| .HBC2 | Xceleon Technologies | Compressed Files | HyperBac Compressed File Archive | SQL HyperBac | Redgate Software |
| .HBE | Xceleon Technologies | Compressed Files | HyperBac Compressed Archive | SQL HyperBac | Redgate Software |
| .HKI | WinHKI | Compressed Files | WinHKI Compressed Archive | WinHKI Archiver | WinHKI |
| .HKI1 | WinHKI | Compressed Files | WinHKI HKI1 Archive | WinHKI Archiver | WinHKI |
| .HKI2 | WinHKI | Compressed Files | WinHKI HKI2 Archive | WinHKI Archiver | WinHKI |
| .HKI3 | WinHKI | Compressed Files | WinHKI HKI3 Archive | WinHKI Archiver | WinHKI |
| .HLZ | European Southern Observatory | Compressed Files | ESO MIDAS Help ASCII File | ESO-MIDAS | European Southern Observatory |
| .HPK | Interscape | Compressed Files | HPack Compressed Archive | HPack | Interscape |
| .HP_ | Microsoft Corporation | Compressed Files | Winhelp Compressed File | Microsoft Windows Help | Microsoft Corporation |
| .HYP | Interscape | Compressed Files | HYPER Compressed Archive | Hyper | Interscape |
| .HZQ | Rowley Associates Ltd | Compressed Files | CrossWorks For ARM Package | CrossWorks for ARM | Rowley Associates Ltd |
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