Gecko
Example user agent
Mozilla/5.0 (Windows NT 6.1; rv:15.0) Gecko/20120716 Firefox/15.0a2KHTML
Example user agent
Mozilla/5.0 (compatible; Konqueror/3.5; Linux; X11; x86_64) KHTML (like Gecko) (Kubuntu)Microsoft Word
Example user agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; MSOffice 12)Presto
Example user agent
Opera/12.80 (Windows NT 5.1; U; en) Presto/2.10.289 Version/12.02Trident
Example user agent
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB5; Avant Browser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)WebKit
Example user agent
Mozilla/5.0 (SymbianOS/9.4; U; Series60/5.0 Nokia5800d-1b/20.2.014; Profile/MIDP-2.1 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML, like Gecko) Safari/413Webkit
Example user agent
Mozilla/5.0 (X11; SMART-TV; Linux) AppleWebkit/538.1 (KHTML, like Gecko) like Chrome ; Safari/538.1webkit
Example user agent
mozilla/5.0 (linux; android 4.2.2; at374 build/jdq39) applewebkit/537.36 (khtml, like gecko) chrome/33.0.1750.166 safari/537.36