Apple Safari:
Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/124 (KHTML, like Gecko) Safari/125
Older version of Apple Safari:
Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-us) AppleWebKit/85.7 (KHTML, like Gecko) Safari/85.6
Even older Apple Netscape 4.79:
Mozilla/4.79 (Macintosh; U; PPC)
wise-guys.nl search engine crawler:
Mozilla/5.0 (compatible; Vagabondo/2.1; webcrawler at wise-guys dot nl; http://webagent.wise-guys.nl/)
The new comming Opera 7.50:
Opera/7.50 (Windows NT 5.1; U) [en]
[i]I want to add here, that the default Opera 7 user agent (MSIE 6) is recognized as Opera :-) ! That's great!
The Opera 7.23:
Opera/7.23 (Windows NT 5.1; U) [en]
Yahoo! search engine crawler:
Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)
Dutch search crawler:
ZoekyBot/1.0
Didn't know this one, but a dead link bot:
Mozilla/4.0 compatible ZyBorg/1.0 Dead Link Checker (wn.zyborg@looksmart.net; http://www.WISEnutbot.com)
?:
Mozilla/4.0 (compatible)
Linux Konqueror:
Mozilla/5.0 (compatible; Konqueror/3.0-rc3; i686 Linux; 20020904)
Linux Konqueror:
Mozilla/5.0 (compatible; Konqueror/3.1-rc2; i686 Linux; 20020513)