User Agent String.Com 

User Agent String explained :

Epiphany 1.0.7
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
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-AT	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) de-AT = German - Austrian
rv:1.6	CVS Branch Tag The version of Gecko being used in the browser
Gecko	Gecko engine inside
20040114	Build Date: the date the browser was built
Epiphany	Name : Epiphany
1.0.7	Epiphany version
Last visit:	2023.10.27 05:38
All Epiphany user agent strings