Bots vs Browsers - Public Bot / User Agent Database & Commentary
Bots vs Browsers - database of 16,271,076 user agents and growing
User Agent Details for "Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+5.1;+Trident/4.0;+BTRS127398;+MRSPUTNIK+2,+4,+1,+74;+GTB7.4;+MRA+6.0+(build+6001))"