| File Extension: | HO |
| File Type Description: | Knowledge Explorer Knowledge Representation Hierarchy Outline |
| File Type Developer: | Open Source |
| Primary Associated Software: | my Knowledge Explorer |
| Primary Software Developer: | Open Source |
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Knowledge Explorer Knowledge Representation Hierarchy Outline files are the most popular type of files to carry the HO file extension, originally developed by Open Source for my Knowledge Explorer. Annoymous user data statistics infer that HO files are most popular in United States and with those using Windows 10 devices. Google Chrome is their primary internet browser for the bulk of these users.
 | my Knowledge Explorer by Open Source |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .RHTML | Yukihiro “Matz” Matsumoto | Web Files | Ruby HTML Web Page |
| .VERSION | Open Source | Data Files | Linux GateD Daemon Data |
| .KEYSTORE | Oracle Corporation | Encoded Files | Java Keystore File |
| .PSPROJ | Broderbund | Page Layout Files | The Print Shop Project File |
| .TRP | VSO Software | Video Files | MPEG-2 HD Video Transport Stream |
| .GRP | Blizzard Entertainment Inc. | Game Files | StarCraft Graphics Group File |
| .LNF | Open Source | Data Files | Oyoaha Lookandfeel Interface Elements File |
| .GNU | Sublime HQ Pty Ltd | Text Files | GNU Licence Information |
| .WEAP | id Software | Game Files | Quake 3 Engine Weapon File |
| .VSY | Open Source | Web Files | VNC Spy Log File |
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