Latest Firefox 138 user agents:

User Agent Platform Device
Mozilla/5.0 (Macintosh; Intel Mac OS X 14; rv:138.0) Gecko/20110101 Firefox/138.0 Mac Unknown
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0/UHcmkYcJCy Windows 10 Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0 | Screen:1280x720 | Window:1600x860 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; en-AU; rv:138.0) Gecko/20172711 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (Macintosh; Intel Mac OS X 11; rv:138.0) Gecko/20010101 Firefox/138.0 Mac Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0esr) Gecko/20221919 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; en-US; rv:138.0) Gecko/20222911 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (Windows NT 7.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0 Windows NT Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:138.0) Gecko/20211211 Firefox/138.0 Ubuntu Unknown
Mozilla/5.0 (X11; NetBSD x86_64; rv:138.0) Gecko/20100101 Firefox/138.0 NetBSD Unknown
Mozilla/5.0 (X11; Linux; rv:138.0) Gecko/138.0 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0esr) Gecko/20211300 Firefox/138.0esr GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0esr) Gecko/20211300 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0esr) Gecko/20162911 Firefox/138.0esr GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20221100 Firefox/138.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0.1-1 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0.1 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0 XTPT/1.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0 LibreWolf/138.0.1-1 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0 LibreWolf/138.0.1 GNU/Linux Unknown