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; MRA 5.9 (build 487) Presto/2.12.388 Version/12.10
• Opera/12.10 (Windows NT 5.2; U; BN Presto/2.9.175 Version/10.00)
• Opera/12.10 (Windows NT 5.2; U; LN Presto/2.9.189 Version/12.00)
• Opera/12.10 (Windows NT 5.3; U; KY Presto/2.9.160 Version/12.00)
• Opera/12.10 (Windows NT 5.1; U; FA Presto/2.9.166 Version/11.00)
• Opera/12.10 (Windows NT 5.1; U; NE Presto/2.9.179 Version/10.00)
• Opera/12.10 (X11; Linux i686; U; CS Presto/2.9.187 Version/12.00)
• Opera/12.10 (Windows NT 5.3; U; CU Presto/2.9.163 Version/11.00)
• Opera/12.10 (Windows NT 6.1; U; FA Presto/2.9.169 Version/10.00)
• Opera/12.10 (Windows NT 6.1; U; HR Presto/2.9.176 Version/10.00)
• Opera/12.10 (Windows NT 6.0; U; KU Presto/2.9.162 Version/11.00)
• Opera/12.10 (Windows NT 6.1; U; BN Presto/2.9.177 Version/10.00)
• Opera/12.10 (Macintosh; Intel Mac OS X 10.8.3 U; BN Presto/2.9.188 Version/11.00)
• Opera/12.10 (X11; Linux x86_64; U; FY Presto/2.9.170 Version/11.00)
• Opera/12.10 (Windows NT 6.3; U; HI Presto/2.9.168 Version/11.00)
• Opera/12.10 (Windows NT 6.2; U; AR Presto/2.9.174 Version/11.00)
• Opera/12.10 (Windows NT 5.2; U; ES Presto/2.9.177 Version/10.00)
• Opera/12.10 (X11; Linux x86_64; U; DE Presto/2.9.189 Version/10.00)
• Opera/12.10 (Windows NT 6.1; U; FY Presto/2.9.178 Version/12.00)
• Opera/12.10 (Windows NT 6.0; U; ET Presto/2.9.161 Version/11.00)
• Opera/12.10 (Windows NT 5.2; U; MO Presto/2.9.189 Version/12.00)
• Opera/12.10 (Windows NT 5.2; U; AB Presto/2.9.161 Version/12.00)
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.7 (build 03757)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; Opera Mini/5.1.21051/19.892) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; YB/6.5.0; MRA 6.0 (build 6068)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.2; WOW64; MRA 5.10 (build 5328)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 6.0 (build 5831)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRSPUTNIK OW 2, 3, 0, 289) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.0 (build 5981)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 8.0 (build 5861)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.10 (build 5230)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.3 (build 7771)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.0 (build 5994)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.5 (build 02746)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.7 (build 03796)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.0; Edition DriverPack) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.7 (build 03790)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.10 (build 5244)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 6.1 (build 6561)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.2; Win64; x64; Edition Next) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.2; MRA 6.0 (build 5831)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.0 (build 5966)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRSPUTNIK OW 2, 3, 0, 289) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 6.0 (build 5676)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.9 (build 4876)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; Edition Yx; MRA 6.0 (build 5972)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRSPUTNIK OW 2, 3, 0, 189) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 8.2 (build 6901)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.7 (build 03773)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.1 (build 6337)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.0 (build 5704)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.10 (build 5310)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.10 (build 5308)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 8.1 (build 6323)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 6.0 (build 6068)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.8 (build 4157)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.10 (build 5218)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.0; MRA 5.5 (build 02842)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.0; MRA 5.10 (build 5339)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.2; WOW64) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 8.0 (build 5981)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 6.1 (build 6639)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 6.0 (build 6068)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 6.0 (build 6015)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.7 (build 3796)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.7 (build 03790)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.4 (build 02644)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.10 (build 5336)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; Edition Yandex) Presto/2.12.388 Version/12.10
• Opera/9.80 (Macintosh; Intel Mac OS X 10.7.5; Edition MAS) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 8.1 (build 6283)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.2 (build 7273)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.8 (build 4598)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.6 (build 03402)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 8.4 (build 7786)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 8.0 (build 5997)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 6.2 (build 7387)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.7 (build 03653)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.10 (build 5308)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.9 (build 4871)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.8 (build 4120)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; Edition Yx 01; MRA 6.0 (build 5680)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; ; MRSPUTNIK OW 2, 3, 0, 104) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.0; MRA 5.4 (build 02647)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.0; Edition Next) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRSPUTNIK OW 2, 3, 0, 228) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRSPUTNIK OW 2, 3, 0, 104) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 8.1 (build 6323)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; MRA 5.3 (build 02542)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 5.1; Edition DriverPack) Presto/2.12.388 Version/12.10
• Opera/9.80 (X11; Linux x86_64) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; Edition Rambler) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 6.0 (build 5993)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 5.7 (build 03639)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.2 (build 7314)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.2 (build 7293)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; WOW64; MRA 5.10 (build 5336)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 8.3 (build 7317)) Presto/2.12.388 Version/12.10
• Opera/9.80 (Windows NT 6.1; MRA 8.0 (build 5997)) Presto/2.12.388 Version/12.10