Latest Firefox 38 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0; Tesseract/1.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0; TE/3.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 AlexaToolbar/pRCymxVf-2.2 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux ppc64le; rv:38.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0 AlexaToolbar/alxf-2.21 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux armv7l; rv:38.0) Gecko/20100101 Firefox/38.0 Ubuntu Unknown
Mozilla/5.0 (X11; SunOS i86pc; rv:38.0) Gecko/20100101 Firefox/38.0 Solaris Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 DejaClick/2.9.2.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 DejaClick/2.9.0.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86.64; rv:38.55.2) Gecko/20100101 Firefox/38.55.2 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86.64; rv:38.35.1) Gecko/20100101 Firefox/38.35.1 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:38.9) Gecko/20100101 Firefox/38.9 GNU/Linux Unknown
Mozilla/5.0 (X11; FreeBSD i386; rv:38.0) Gecko/20100101 Firefox/38.0 FreeBSD Unknown
Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Firefox/38.0 FreeBSD Unknown
Mozilla/5.0 (X11; Fedora; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0 Fedora Unknown
Mozilla/5.0 (Windows NT 8.2.2; Win64; x64; rv:38.41.2) Gecko/20100101 Firefox/38.41.2 Windows NT Unknown
Mozilla/5.0 (Windows NT 8.0.2; Win64; x64; rv:38.42.2) Gecko/20100101 Firefox/38.42.2 Windows NT Unknown
Mozilla/5.0 (Windows NT 8.0.1; Win64; x64; rv:38.35.1) Gecko/20100101 Firefox/38.35.1 Windows NT Unknown