Bots vs Browsers - Public Bot / User Agent Database & Commentary
Bots vs Browsers - database of 16,271,071 user agents and growing
User Agent Details for "Mozilla/5.0+(Windows;+U;+Windows+NT+5.1;+ru;+rv:1.9.0.8)+Gecko/2009032609+AskTbTKR/3.12.5.17640+Firefox/3.0.8+(.NET+CLR+3.5.30729)"