User Agent String.Com 

User Agent String explained :

Netscape 7.02
Mozilla	It's a Mozilla based browser
5.0	Mozilla Version
X11	X Window System a windowing system for bitmap displays
U	Security values: N for no security U for strong security I for weak security
Linux i686	Operating System: Linux running on a Intel Pentium Pro CPU
de-DE	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) de-DE = German - Germany
rv:1.0.2	CVS Branch Tag The version of Gecko being used in the browser
Gecko	Gecko engine inside
20030208	Build Date: the date the browser was built
Netscape	Name : Netscape
7.02	Version
All Netscape user agent strings