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/9.80 (Windows NT 5.1; Edition Telkomsel) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; Edition Indian Local) Presto/2.12.388 Version/12.18
• Opera/9.80 (X11; Fedora; Linux x64; YB/3.5.1) Presto/2.12.388 Version/12.18
• Opera/12.18 (Windows NT 5.1; U; AF Presto/2.9.186 Version/12.00)
• Opera/12.18 (Windows NT 5.1; U; TK Presto/2.9.162 Version/11.00)
• Opera/12.18 (Windows NT 6.2; U; RO Presto/2.9.171 Version/12.00)
• Opera/12.18 (Windows NT 5.2; U; HU Presto/2.9.185 Version/11.00)
• Opera/12.18 (Windows NT 6.0; U; TK Presto/2.9.162 Version/10.00)
• Opera/12.18 (Windows NT 5.3; U; SK Presto/2.9.168 Version/10.00)
• Opera/12.18 (Windows NT 5.1; U; FO Presto/2.9.184 Version/11.00)
• Opera/12.18 (Windows NT 6.0; U; HY Presto/2.9.186 Version/12.00)
• Opera/12.18 (Windows NT 5.3; U; SW Presto/2.9.183 Version/10.00)
• Opera/12.18 (Windows NT 6.1; U; MT Presto/2.9.166 Version/10.00)
• Opera/12.18 (Windows NT 6.3; U; SV Presto/2.9.181 Version/10.00)
• Opera/12.18 (X11; Linux i686; U; MG Presto/2.9.187 Version/12.00)
• Opera/12.18 (Windows NT 6.3; U; BG Presto/2.9.164 Version/11.00)
• Opera/12.18 (Windows NT 6.0; U; GV Presto/2.9.163 Version/12.00)
• Opera/12.18 (Windows NT 6.2; U; AS Presto/2.9.185 Version/12.00)
• Opera/12.18 (Windows NT 6.0; U; PT Presto/2.9.186 Version/11.00)
• Opera/12.18 (Windows NT 5.2; U; MS Presto/2.9.183 Version/12.00)
• Opera/12.18 (Windows NT 5.3; U; HU Presto/2.9.162 Version/11.00)
• Opera/12.18 (Windows NT 6.2; U; MN Presto/2.9.185 Version/12.00)
• Opera/12.18 (Windows NT 5.1; U; HU Presto/2.9.179 Version/12.00)
• Opera/12.18 (Windows NT 5.1; U; SL Presto/2.9.181 Version/10.00)
• Opera/12.18 (Windows NT 6.0; U; SK Presto/2.9.179 Version/11.00)
• Opera/12.18 (Windows NT 5.1; U; ET Presto/2.9.173 Version/12.00)
• Opera/9.80 (Windows NT 6.1; Win64; x64; MRA 6.3 (build 7771)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; MRA 5.5 (build 02842); MRSPUTNIK OW 2, 3, 0, 228) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; Win64; x64) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; Edition Campaign 21) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1) Presto/2.12.388 Version/12.18,gzip(gfe)
• Opera/9.80 (Linux 6.2; WOW64) Presto/2.12.388 Version/12.18
• Opera/9.80 (X11; Linux i686; Ubuntu/14.10) Presto/2.12.388 Version/12.18
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1 Opera 12.18
• Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/52. Opera 12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.2 (build 7137)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 5.7 (build 03797)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.7 (build 03796)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.8 (build 4139)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; Edition Yx 01) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; Win64; x64; MRA 6.5 (build 9316)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; MRA 5.3 (build 02564)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.2 (build 7528)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.0 (build 6068)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; Win64; x64; MRA 6.0 (build 6068)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; Edition Rambler) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.2 (build 7194)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.9 (build 4953)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.4 (build 02647)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; WOW64; MRA 8.3 (build 7317)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.2 (build 7138)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 6003)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 5989)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; Win64; x64; 77164AEB-F50A-E9F1-BBCC-5623C0E702B4) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 5.10 (build 5308)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 8.2 (build 6870)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.3 (build 8063)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; WOW64; MRA 6.3 (build 8050)[HotListWindow]) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 6019)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.4 (build 8614)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.8 (build 4120)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.0 (build 5650)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 8.2 (build 7046)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.3 (build 7771)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.8 (build 4664)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.6 (build 03278); MRSPUTNIK OW 2, 2, 0, 94) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.10 (build 5310)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.1 (build 6578)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.3 (build 8064)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 8.2 (build 6901)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.3 (build 8050)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 5.8 (build 4664)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; WOW64; MRA 6.3 (build 8050)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 6007)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; Win64; x64; MRA 5.10 (build 5231)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 8.1 (build 6347)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.3 (build 7771)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.8 (build 4157)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 8.0 (build 5989)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.1 (build 6261)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.6 (build 03278)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 6008)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; Edition Campaign 09) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 5.5 (build 02842)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; MRA 8.0 (build 5784)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; DefView) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 6.0 (build 5976)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.2 (build 7314)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.2 (build 7528)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.3 (build 7919)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; MRA 6.4 (build 8614)) Presto/2.12.388 Version/12.18
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0 Opera 12.18
• Opera/9.80 (Windows NT 5.1; Edition Campaign 21) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.2; Win64; x64; MRA 6.0 (build 5976)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.1; MRA 8.0 (build 5880)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.0; MRA 6.3 (build 8050)) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 5.2; U; MRA 6.0 (build 5976); en-US) Presto/3.0 Version/12.18
• Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0 Opera 12.18
• Opera/9.80 (Windows NT 5.1; Edition United Kingdom Local) Presto/2.12.388 Version/12.18
• Opera/9.80 (Windows NT 6.1; MRA 6.5 (build 9316)) Presto/2.12.388 Version/12.18