whmcsProxmoxAddon/storage/app/ostype.json

{
    "other": "Unspecified OS",
    "wxp": "Microsoft Windows XP",
    "w2k": "Microsoft Windows 2000",
    "w2k3": "Microsoft Windows 2003",
    "w2k8": "Microsoft Windows 2008",
    "wvista": "Microsoft Windows Vista",
    "win7": "Microsoft Windows 7",
    "win8": "Microsoft Windows 8/2012",
    "win10": "Microsoft Windows 10/2016/2019",
    "l24": "Linux 2.4 Kernel",
    "l26": "Linux 5.x - 2.6 Kernel",
    "solaris": "Solaris Kernel"
}