WinNT

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0)

Mozilla/4.0 (compatible; MSIE 6.0; MSIE 5.5; Windows NT 4.0) Opera 7.0 [en]

Opera/9.00 (Windows NT 4.0; U; en)

Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0; obot)

Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0)

Mozilla/4.0 (compatible; MSIE 4.01; Windows NT)

Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0; .NET CLR 1.0.2914)