Latest user agents (if you are looking for complete list, download it here):

• Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.0.4) Gecko/20060628 Firefox/50.0
• Mozilla/5.0 (X11; U; OpenBSD i386) AppleWebKit/531.76.29 (KHTML, like Gecko) Chrome/56.3.8716.3088 Safari/533.36
• Mozilla/5.0 (X11; U; OpenBSD i386) AppleWebKit/531.72.25 (KHTML, like Gecko) Chrome/56.3.8420.3793 Safari/533.33
• Mozilla/5.0 (X11; U; OpenBSD i386) AppleWebKit/530.76.29 (KHTML, like Gecko) Chrome/56.2.7897.3169 Safari/533.37
• Mozilla/5.0 (X11; U; OpenBSD i386) AppleWebKit/530.75.28 (KHTML, like Gecko) Chrome/56.2.8716.3088 Safari/533.36
• Mozilla/5.0 (X11; OpenBSD i386; rv:36.0) Gecko/20100101 Firefox/36.0 SeaMonkey/21F6DD
• Mozilla/5.0 (X11; OpenBSD amd64; rv:103.0) Gecko/20100101 Firefox/103.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:102.0) Gecko/20100101 Firefox/102.0
• Mozilla/5.0 (X11; OpenBSD i386; rv:36.0) Gecko/20100101 Firefox/36.0 SeaMonkey/78D79A
• Mozilla/5.0 (X11; OpenBSD amd64; rv:101.0) Gecko/20100101 Firefox/101.0
• Mozilla/5.0 (X11; OpenBSD i386; rv:36.0) Gecko/20100101 Firefox/36.0 SeaMonkey/F33A61
• Mozilla/5.0 (X11; OpenBSD amd64; rv:42.0) Gecko/20100101 Firefox/11EB
• Mozilla/5.0 (X11; OpenBSD amd64; rv:43.0) Gecko/20100101 Firefox/74FF
• Mozilla/5.0 (X11; OpenBSD i386; rv:36.0) Gecko/20100101 Firefox/36.0 SeaMonkey/24F0DA
• Mozilla/5.0 (X11; OpenBSD amd64; rv:100.0) Gecko/20100101 Firefox/100.0
• Mozilla/5.0 (X11; U; OpenBSD ppc; en-US; rv:1.8.1.9) Gecko/20070223 BonEcho/2.0.0.9
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.0.7) Gecko/20061017 Firefox/1.5.0.7
• Mozilla/5.0 (X11; OpenBSD amd64; rv:68.0) Gecko/20100101 Firefox/68.0 SeaMonkey/2.53.11.1
• Opera/9.22 (X11; OpenBSD i386; U; en)
• Mozilla/5.0 (X11; U; OpenBSD ppc; en-US; rv:1.8.1.4) Gecko/20070223 BonEcho/2.0.0.4
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.0.4) Gecko/20060628 Firefox/1.5.0.4
• Mozilla/5.0 (X11; U; OpenBSD amd64; en-US; rv:1.8.1.6) Gecko/20070817 Firefox/2.0.0.6
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.4) Gecko/20070704 Firefox/2.0.0.6
• Mozilla/5.0 (X11; U; OpenBSD ppc; en-US; rv:1.8.0.10) Gecko/20070223 Firefox/1.5.0.10
• Mozilla/5.0 (X11; OpenBSD amd64; rv:99.0) Gecko/20100101 Firefox/99.0
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Iridium/2021.12.96 Safari/537.36 Chrome/96.0.4664.110
• Mozilla/5.0 (X11; OpenBSD amd64; rv:43.0) Gecko/20100101 Firefox/2C98
• Mozilla/5.0 (X11; OpenBSD amd64; rv:98.0) Gecko/20100101 Firefox/98.0
• Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.125 Safari/2769B1
• Mozilla/5.0 (X11; OpenBSD amd64; rv:43.0) Gecko/20100101 Firefox/B393
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/62D529
• Mozilla/5.0 (X11; OpenBSD amd64; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.122 Otter/1.0.02
• Mozilla/5.0 (X11; U; OpenBSD sparc64; en-US; rv:1.8.1.6) Gecko/20070816 Firefox/50.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:96.0) Gecko/20100101 Firefox/96.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:78.0) Gecko/20210101 Firefox/78.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:94) Gecko/20100101 Firefox/94
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.4) Gecko/20070704 Firefox/50.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:95.0) Gecko/20100101 Firefox/95.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.0.1) Gecko/20060213 Firefox/52.5.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:56.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:42.0) Gecko/20100101 Firefox/F561
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US;) Gecko/20226969 Firefox/96.1
• Mozilla/5.0 (X11; OpenBSD arm64; rv:94.0) Gecko/20100101 Firefox/94.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:94.0) Gecko/20100101 Firefox/94.0
• Mozilla/5.0 (X11; OpenBSD i386; rv:88.0) Gecko/20100101 Firefox/88.0
• Mozilla/5.0 (X11; OpenBSD i386; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.7
• Mozilla/5.0 (X11; OpenBSD amd64; rv:92.0) Gecko/20100101 Firefox/92.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:93.0) Gecko/20100101 Firefox/93.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:91.0) Gecko/20100101 Firefox/93.0
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/F54E38
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Iridium/2020.11.85 Safari/537.36 Chrome/85.0.4183.83
• Mozilla/5.0 (X11; OpenBSD amd64; rv:91.0) Gecko/20100101 Firefox/91.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.7.0.13) Gecko/20060901
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.111 Safari/537.36
• Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.124 Safari/075F45
• Mozilla/5.0 (X11; OpenBSD amd64; rv:90.0) Gecko/20100101 Firefox/90.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.7
• Links (2.23; OpenBSD 6.9 amd64; LLVM/Clang 11.1; x)
• Mozilla/5.0 (X11; U; OpenBSD sparc64; en-CA; rv:1.8.0.2) Gecko/20060429 Firefox/50.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.0.7) Gecko/20060920 Firefox/1.5.0.7
• Mozilla/5.0 (X11; OpenBSD amd64; rv:89.0) Gecko/20100101 Firefox/89.0
• Mozilla/5.0 (X11; OpenBSD i386; rv:87.0) Gecko/20100101 Firefox/87.0
• Mozilla/5.0 (X11; OpenBSD arm64; rv:88.0) Gecko/20100101 Firefox/88.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.16) Gecko/20080812 Firefox/2.0.0.16
• Mozilla/5.0 (X11; OpenBSD amd64; rv:88.0) Gecko/20100101 Firefox/88.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.9.2.20) Gecko/20110803 Firefox/3.6.20
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.125 Safari/A2C434
• Mozilla/5.0 (X11; U; OpenBSD amd64; en-US; rv:1.8.1.6) Gecko/20070817 Firefox/54.0
• Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.125 Safari/E3AF2A
• Mozilla/5.0 (X11; U; OpenBSD amd64; en; rv:1.8.1.6) Gecko/20070817 Epiphany/2.18 Firefox/2.0.0.6
• Mozilla/5.0 (X11; OpenBSD amd64; rv:43.0) Gecko/20100101 Firefox/1A24
• Mozilla/5.0 (X11; OpenBSD amd64; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0,gzip(gfe)
• Mozilla/5.0 (X11; OpenBSD amd64; rv:43.0) Gecko/20100101 Firefox/5B92
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/0D9CCA
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.7.10) Gecko/20050919 (No IDN) Firefox/52.7.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:42.0) Gecko/20100101 Firefox/BF50
• Mozilla/5.0 (X11; OpenBSD amd64; rv:86.0) Gecko/20100101 Firefox/86.0
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Iridium/2020.04.81 Safari/537.36 Chrome/81.0.4044.92
• Mozilla/5.0 (X11; OpenBSD i386; rv:81.0) Gecko/20100101 Firefox/81.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:85.0) Gecko/20100101 Firefox/85.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.6) Gecko/20070819 Firefox/54.0
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.6) Gecko/20070819 Firefox/2.0.0.6
• Mozilla/5.0 (X11; OpenBSD i386; rv:82.0) Gecko/20100101 Firefox/82.0
• Mozilla/5.0 (X11; U; OpenBSD sparc64; en-CA; rv:1.8.0.2) Gecko/20060429 Firefox/1.5.0.2
• Opera/9.01 (X11; OpenBSD i386; U; en)
• Mozilla/5.0 (X11; OpenBSD amd64; rv:24.0) Gecko/20100101 Firefox/24.0 SeaMonkey/2.21
• Mozilla/5.0 (X11; U; OpenBSD sparc64; pl-PL; rv:1.8.0.2) Gecko/20060429 Firefox/1.5.0.2
• Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.7) Gecko/20070930 Firefox/52.0
• Mozilla/5.0 (X11; U; OpenBSD sparc64; en-AU; rv:1.8.1.6) Gecko/20071225 Firefox/51.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:84.0) Gecko/20100101 Firefox/84.0
• Mozilla/5.0 (X11; OpenBSD i686) AppleWebKit/525.21 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/525.21
• Mozilla/5.0 (X11; OpenBSD i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36
• Mozilla/5.0 (X11; OpenBSD x86_64; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:45.0) Gecko/20100101 Firefox/45.0
• Mozilla/5.0 (X11; OpenBSD amd64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4183.121 Safari/537.36
• Mozilla/5.0 (X11; OpenBSD amd64; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:56.0) Gecko/20100101 Firefox/56.0