For more information, please visit the following pages:

• Opera
• Opera Software ASA
• Presto

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

• Opera/9.55 (Windows NT 5.0; en-US) Presto/2.10.286 Version/12.00
• Opera/9.58.(Windows NT 10.0; nan-TW) Presto/2.9.167 Version/12.00
• Opera/9.53.(X11; Linux x86_64; ur-IN) Presto/2.9.173 Version/12.00
• Opera/9.58.(X11; Linux i686; sr-ME) Presto/2.9.176
• Opera/9.5 (Windows NT 5.1; U; fr)')) HAVING 8749=8548 AND (('mqSK'='mqSK
• Opera/9.5 (Windows NT 5.1; U; fr))) HAVING 5488=4949 AND ((4944=4944
• Opera/9.5 (Windows NT 5.1; U; fr)'))) AND 2135=8291--
• Opera/9.5 (Windows NT 5.1; U; fr) HAVING
• Opera/9.5 (Macintosh; U; lt)
• Opera/9.53 (Windows NT 5.2; U; RM Presto/2.9.179
• Opera/9.57 (Windows 98; Win 9x 4.90; en-US) Presto/2.10.305 Version/12.00
• Opera/9.5 (Windows NT 5.1; U; fr)'))) AND 2135=8291-- MZdW
• Opera/9.5 (Windows NT 5.1; U; fr) HAVING 7312=4218
• Opera/9.5 (Windows NT 5.1; U; fr)'BetVhH<'">kqOgIW
• Opera/9.57.(Windows NT 5.01; szl-PL) Presto/2.9.168 Version/10.00
• Opera/9.59.(Windows NT 6.1; unm-US) Presto/2.9.180 Version/12.00
• Opera/9.5 (Windows NT 5.2; U; NB Presto/2.9.165 Version/12.00)
• Opera/9.56 (Windows NT 5.0; U; NO Presto/2.9.177 Version/10.00)
• Opera/9.59 (Windows NT 6.3; U; SV Presto/2.9.168 Version/10.00)
• Opera/9.5 (Windows NT 6.1; U; UZ Presto/2.9.164 Version/10.00)
• Opera/9.53 (Windows NT 6.0; U; LT Presto/2.9.184 Version/11.00)
• Opera/9.53 (Macintosh; Intel Mac OS X 10.9.1 U; SW Presto/2.9.185 Version/11.00)
• Opera/9.59 (Windows NT 6.0; U; KU Presto/2.9.169 Version/12.00)
• Opera/9.54 (Windows NT 6.2; U; SR Presto/2.9.186 Version/11.00)
• Opera/9.54 (Windows NT 6.2; U; MK Presto/2.9.188 Version/12.00)
• Opera/9.54 (Windows NT 6.0; U; SL Presto/2.9.161 Version/10.00)
• Opera/9.55 (Windows NT 6.1; U; NL Presto/2.9.186 Version/11.00)
• Opera/9.56 (Windows NT 6.2; U; SR Presto/2.9.172 Version/10.00)
• Opera/9.54 (Windows NT 5.1; U; HT Presto/2.9.163 Version/12.00)
• Opera/9.5 (Windows NT 5.1; U; NE Presto/2.9.175 Version/10.00)
• Opera/9.59 (Windows NT 5.1; U; KY Presto/2.9.168 Version/12.00)
• Opera/9.54 (X11; Linux i686; U; HE Presto/2.9.173 Version/10.00)
• Opera/9.56 (Windows NT 6.0; U; SR Presto/2.9.190 Version/11.00)
• Opera/9.56 (Windows NT 5.2; U; ES Presto/2.9.190 Version/11.00)
• Opera/9.5 (Windows NT 6.0; U; TK Presto/2.9.180 Version/10.00)
• Opera/9.58 (Windows NT 5.0; U; SW Presto/2.9.172 Version/12.00)
• Opera/9.58 (Windows NT 6.0; U; JV Presto/2.9.166 Version/11.00)
• Opera/9.53 (Windows NT 6.0; U; MS Presto/2.9.165 Version/12.00)
• Opera/9.54 (Windows NT 5.3; U; FI Presto/2.9.162 Version/10.00)
• Opera/9.53 (Windows NT 6.2; U; CY Presto/2.9.182 Version/11.00)
• Opera/9.53 (Windows NT 5.2; U; HU Presto/2.9.172 Version/11.00)
• Opera/9.58 (Windows NT 6.2; U; DE Presto/2.9.181 Version/10.00)
• Opera/9.53 (Windows NT 5.2; U; EL Presto/2.9.183 Version/11.00)
• Opera/9.59 (Windows NT 5.3; U; LA Presto/2.9.169 Version/10.00)
• Opera/9.53 (Windows NT 6.1; U; JV Presto/2.9.182 Version/11.00)
• Opera/9.53 (Windows NT 5.0; U; HE Presto/2.9.167 Version/10.00)
• Opera/9.54 (Windows NT 5.1; U; TY Presto/2.9.188 Version/12.00)
• Opera/9.58 (Windows NT 5.1; U; CY Presto/2.9.181 Version/11.00)
• Opera/9.56 (Windows NT 6.2; U; KY Presto/2.9.171 Version/10.00)
• Opera/9.53 (Windows NT 5.2; U; SK Presto/2.9.166 Version/12.00)
• Opera/9.54 (Windows NT 6.0; U; SO Presto/2.9.162 Version/10.00)
• Opera/9.55 (Windows NT 6.0; U; IS Presto/2.9.188 Version/10.00)
• Opera/9.54 (Windows NT 5.1; U; HR Presto/2.9.177 Version/10.00)
• Opera/9.53 (Windows NT 5.0; U; SV Presto/2.9.175 Version/11.00)
• Opera/9.53 (Windows NT 6.1; U; LI Presto/2.9.167 Version/10.00)
• Opera/9.53 (Windows NT 5.2; U; LV Presto/2.9.179 Version/12.00)
• Opera/9.53 (Macintosh; Intel Mac OS X 10.9.3 U; FR Presto/2.9.185 Version/10.00)
• Opera/9.57 (Windows NT 6.1; U; AB Presto/2.9.161 Version/10.00)
• Opera/9.54 (Windows NT 5.1; U; EU Presto/2.9.189 Version/10.00)
• Opera/9.58 (Windows NT 6.2; U; RM Presto/2.9.189 Version/10.00)
• Opera/9.54 (Windows NT 6.2; U; LI Presto/2.9.174 Version/10.00)
• Opera/9.58 (Windows NT 5.2; U; JA Presto/2.9.170 Version/11.00)
• Opera/9.58 (Windows NT 5.3; U; DE Presto/2.9.187 Version/12.00)
• Opera/9.5 (Windows NT 6.1; U; EL Presto/2.9.181 Version/11.00)
• Opera/9.56 (Windows NT 6.0; U; LT Presto/2.9.179 Version/11.00)
• Opera/9.55 (Windows NT 5.2; U; KA Presto/2.9.178 Version/11.00)
• Opera/9.57 (Windows NT 5.0; U; SC Presto/2.9.169 Version/10.00)
• Opera/9.58 (Windows NT 6.2; U; FJ Presto/2.9.183 Version/11.00)
• Opera/9.59 (Windows NT 6.3; U; SL Presto/2.9.170 Version/11.00)
• Opera/9.53 (Windows NT 5.0; U; HT Presto/2.9.174 Version/12.00)
• Opera/9.55 (Windows NT 5.2; U; GV Presto/2.9.167 Version/11.00)
• Opera/9.58 (Windows NT 6.2; U; CO Presto/2.9.174 Version/12.00)
• Opera/9.59 (Windows NT 5.2; U; EN Presto/2.9.190 Version/11.00)
• Opera/9.57 (Windows NT 6.1; U; OC Presto/2.9.186 Version/10.00)
• Opera/9.54 (Windows NT 5.3; U; LN Presto/2.9.166 Version/10.00)
• Opera/9.58 (Windows NT 5.0; U; HR Presto/2.9.167 Version/11.00)
• Opera/9.58 (Windows NT 5.3; U; RO Presto/2.9.171 Version/10.00)
• Opera/9.54 (Windows NT 5.0; U; SE Presto/2.9.166 Version/10.00)
• Opera/9.53 (Windows NT 5.3; U; MK Presto/2.9.162 Version/11.00)
• Opera/9.57 (Windows NT 5.0; U; KO Presto/2.9.171 Version/11.00)
• Opera/9.57 (X11; Linux x86_64; U; SO Presto/2.9.161 Version/12.00)
• Opera/9.53 (Windows NT 5.0; U; KG Presto/2.9.185 Version/11.00)
• Opera/9.57 (Windows NT 6.1; U; BR Presto/2.9.167 Version/10.00)
• Opera/9.59 (Windows NT 5.2; U; UR Presto/2.9.180 Version/10.00)
• Opera/9.53 (Windows NT 5.1; U; GL Presto/2.9.183 Version/12.00)
• Opera/9.5 (Windows NT 5.1; U; DE Presto/2.9.179 Version/10.00)
• Opera/9.59 (Windows NT 6.2; U; KW Presto/2.9.169 Version/11.00)
• Opera/9.5 (Windows NT 5.1; U; NB Presto/2.9.188 Version/12.00)
• Opera/9.56 (Windows NT 6.2; U; HT Presto/2.9.161 Version/12.00)
• Opera/9.5 (Windows NT 5.0; U; BO Presto/2.9.177 Version/11.00)
• Opera/9.56 (Macintosh; Intel Mac OS X 10.10.1 U; OC Presto/2.9.177 Version/10.00)
• Opera/9.54 (Windows NT 6.3; U; KW Presto/2.9.179 Version/12.00)
• Opera/9.55 (Windows NT 6.3; U; CO Presto/2.9.181 Version/11.00)
• Opera/9.59 (X11; Linux x86_64; U; OC Presto/2.9.187 Version/10.00)
• Opera/9.59 (Windows NT 5.1; U; NE Presto/2.9.177 Version/12.00)
• Opera/9.5 (Windows NT 6.0; U; AF Presto/2.9.168 Version/10.00)
• Opera/9.59 (Windows NT 6.1; U; GA Presto/2.9.167 Version/12.00)
• Opera/9.57 (Windows NT 6.0; U; NN Presto/2.9.178 Version/11.00)
• Opera/9.53 (Windows NT 5.3; U; AS Presto/2.9.161 Version/10.00)
• Opera/9.5 (Windows NT 5.1; U; SK Presto/2.9.187 Version/11.00)