User Agent String.Com 

User Agent String explained :

Galeon 1.2.8
Mozilla	MozillaProductSlice. Claims to be a Mozilla based user agent, which is only true for Gecko browsers like Firefox and Netscape. For all other user agents it means 'Mozilla-compatible'. In modern browsers, this is only used for historical reasons. It has no real meaning anymore
5.0	Mozilla version
Galeon	Name : Galeon
1.2.8	Galeon version
X11	X Window System a windowing system for bitmap displays
Linux i686	Operating System: Linux running on a Intel Pentium Pro CPU
U	Security values: N for no security U for strong security I for weak security
Gecko	Gecko engine inside
20030212	Build Date: the date the browser was built
Last visit:	2018.07.29 04:54
All Galeon user agent strings