| Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; tr) Opera 8.50 |
Windows XP | Unknown |
| Opera/8.50 (Nintendo DS; Opera/8.50.2765; U; en) |
Nintendo Mobile DS | DS |
| Opera/8.54 (X11; Linux i686; U; pl) |
GNU/Linux | Unknown |
| Opera/8.54 (Windows NT 6.2; U; en) |
Windows 8 | Unknown |
| Opera/8.54 (Windows NT 4.0; U; zh-cn) |
Windows NT | Unknown |
| Opera/8.53 (Windows NT 5.1; U; pt) |
Windows XP | Unknown |
| Opera/8.53 (Windows NT 5.0; U; en) |
Windows 2000 | Unknown |
| Opera/8.52 (Windows NT 5.0; U; en) |
Windows 2000 | Unknown |
| Opera/8.52 (Windows ME; U; en) |
Windows ME | Unknown |
| Opera/8.51 (FreeBSD 5.1; U; en) |
FreeBSD 5 | Unknown |
| Opera/8.50 (Windows; U; sk) |
Windows | Unknown |
| Opera/8.50 (Windows; U; da) |
Windows | Unknown |
| Opera/8.50 (Windows NT 5.1; U; fr) |
Windows XP | Unknown |
| Opera/8.50 (Windows ME; U; en) |
Windows ME | Unknown |
| Opera/8.49.(Windows 98; Win 9x 4.90; si-LK) Presto/2.9.180 |
Windows ME | Unknown |
| Opera/8.43.(Windows 95; crh-UA) Presto/2.9.165 |
Windows 95 | Unknown |
| Opera/8.01 (Windows NT 5.1; U; pl) |
Windows XP | Unknown |
| Opera/8.01 (Windows NT 5.1; U; de) |
Windows XP | Unknown |
| Opera/8.01 (Windows NT 5.1) |
Windows XP | Unknown |
| Opera/8.01 (Windows NT 5.0; U; de) |
Windows 2000 | Unknown |