Latest Firefox 139 user agents:

User Agent Platform Device
Mozilla/5.0 (Macintosh; Intel Mac OS X 13; rv:139.0) Gecko/20110101 Firefox/139.0 Mac Unknown
Mozilla/5.0 (Macintosh; Intel RMac OS X 11.4; rv:139.0) Gecko/20100101 Firefox/139.0 Mac Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 | Screen:1280x720 | Window:1600x860 GNU/Linux Unknown
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3; rv:139.913.582) Gecko/20100101 Firefox/139.913.582 Mac 10 Unknown
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:139.0esr) Gecko/20100101 Firefox/139.0esr Windows 7 Unknown
Mozilla/5.0 (X11; U; Linux; en-AU; rv:139.0) Gecko/20222619 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (ZZ; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (ZZ; Linux i686; rv:139.0) Gecko/20100101 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Win11; rv:139.0) Gecko/20100101 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (X11; SunOS i86pc; rv:139.0.1) Gecko/20100101 Firefox/139.0.1 Solaris Unknown
Mozilla/5.0 (X11; OpenBSD amd64; rv:139.0) Gecko/20100101 Firefox/139.0 OpenBSD Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:139.0.4) Gecko/20100101 Firefox/139.0.4 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:139.0 [jmb]) Gecko/20100101 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20161300 Firefox/139.0.4 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:139.0) Gecko/20100101 Firefox/139.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 Fedora Unknown
Mozilla/5.0 (X11; Debian; Linux; en-us; rv:139.0) Gecko/20222704 Firefox/139.0 Debian Unknown
Mozilla/5.0 (X11; Debian; Linux; en-AU; rv:139.0) Gecko/20222704 Firefox/139.0 Debian Unknown
Mozilla/5.0 (Windows NT Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 Windows 10 Unknown
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:139.664.070) Gecko/20100101 Firefox/139.664.070 Windows 8 Unknown