- "AIX": "AIX"
- "AND": "Android"
- "ADR": "Android TV"
- "AMZ": "Amazon Linux"
- "AMG": "AmigaOS"
- "ATV": "tvOS"
- "ARL": "Arch Linux"
- "BTR": "BackTrack"
- "SBA": "Bada"
- "BEO": "BeOS"
- "BLB": "BlackBerry OS"
- "QNX": "BlackBerry Tablet OS"
- "BOS": "Bliss OS"
- "BMP": "Brew"
- "BSN": "BrightSignOS"
- "CAI": "Caixa Mágica"
- "CES": "CentOS"
- "CST": "CentOS Stream"
- "CLR": "ClearOS Mobile"
- "COS": "Chrome OS"
- "CRS": "Chromium OS"
- "CHN": "China OS"
- "CYN": "CyanogenMod"
- "DEB": "Debian"
- "DEE": "Deepin"
- "DFB": "DragonFly"
- "DVK": "DVKBuntu"
- "FED": "Fedora"
- "FEN": "Fenix"
- "FOS": "Firefox OS"
- "FIR": "Fire OS"
- "FOR": "Foresight Linux"
- "FRE": "Freebox"
- "BSD": "FreeBSD"
- "FYD": "FydeOS"
- "FUC": "Fuchsia"
- "GNT": "Gentoo"
- "GRI": "GridOS"
- "GTV": "Google TV"
- "HPX": "HP-UX"
- "HAI": "Haiku OS"
- "IPA": "iPadOS"
- "HAR": "HarmonyOS"
- "HAS": "HasCodingOS"
- "IRI": "IRIX"
- "INF": "Inferno"
- "JME": "Java ME"
- "KOS": "KaiOS"
- "KAL": "Kali"
- "KAN": "Kanotix"
- "KNO": "Knoppix"
- "KTV": "KreaTV"
- "KBT": "Kubuntu"
- "LIN": "GNU/Linux"
- "LND": "LindowsOS"
- "LNS": "Linspire"
- "LEN": "Lineage OS"
- "LBT": "Lubuntu"
- "LOS": "Lumin OS"
- "LUN": "LuneOS"
- "VLN": "VectorLinux"
- "MAC": "Mac"
- "MAE": "Maemo"
- "MAG": "Mageia"
- "MDR": "Mandriva"
- "SMG": "MeeGo"
- "MCD": "MocorDroid"
- "MON": "moonOS"
- "MIN": "Mint"
- "MLD": "MildWild"
- "MOR": "MorphOS"
- "NBS": "NetBSD"
- "MTK": "MTK / Nucleus"
- "MRE": "MRE"
- "WII": "Nintendo"
- "NDS": "Nintendo Mobile"
- "NOV": "Nova"
- "OS2": "OS/2"
- "T64": "OSF1"
- "OBS": "OpenBSD"
- "OWR": "OpenWrt"
- "OTV": "Opera TV"
- "ORA": "Oracle Linux"
- "ORD": "Ordissimo"
- "PAR": "Pardus"
- "PCL": "PCLinuxOS"
- "PIC": "PICO OS"
- "PLA": "Plasma Mobile"
- "PSP": "PlayStation Portable"
- "PS3": "PlayStation"
- "PUR": "PureOS"
- "RHT": "Red Hat"
- "RED": "RedOS"
- "REV": "Revenge OS"
- "ROS": "RISC OS"
- "ROK": "Roku OS"
- "RSO": "Rosa"
- "ROU": "RouterOS"
- "REM": "Remix OS"
- "RRS": "Resurrection Remix OS"
- "REX": "REX"
- "RZD": "RazoDroiD"
- "SAB": "Sabayon"
- "SSE": "SUSE"
- "SAF": "Sailfish OS"
- "SEE": "SeewoOS"
- "SIR": "Sirin OS"
- "SLW": "Slackware"
- "SOS": "Solaris"
- "SYL": "Syllable"
- "SYM": "Symbian"
- "SYS": "Symbian OS"
- "S40": "Symbian OS Series 40"
- "S60": "Symbian OS Series 60"
- "SY3": "Symbian^3"
- "TEN": "TencentOS"
- "TDX": "ThreadX"
- "TIZ": "Tizen"
- "TIV": "TiVo OS"
- "TOS": "TmaxOS"
- "UBT": "Ubuntu"
- "VID": "VIDAA"
- "WAS": "watchOS"
- "WER": "Wear OS"
- "WTV": "WebTV"
- "WHS": "Whale OS"
- "WIN": "Windows"
- "WCE": "Windows CE"
- "WIO": "Windows IoT"
- "WMO": "Windows Mobile"
- "WPH": "Windows Phone"
- "WRT": "Windows RT"
- "XBX": "Xbox"
- "XBT": "Xubuntu"
- "YNS": "YunOS"
- "ZEN": "Zenwalk"
- "ZOR": "ZorinOS"
- "IOS": "iOS"
- "POS": "palmOS"
- "WOS": "webOS"
