User Agent String explained :
|  Firefox 2.0.0.8 | |
|---|---|
| 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 | 
| Macintosh | Platform | 
| U | Security values: 
 | 
| PPC Mac OS X Mach-0 | Operating System: OS X running on a PowerPC CPU (PPC) based on a Mach Kernel using Mach-O (Mach object) file format | 
| en | Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en =  English | 
| rv:1.8.1.8 | CVS Branch Tag The version of Gecko being used in the browser | 
| Gecko | Gecko engine inside | 
| 20071008 | Build Date: the date the browser was built | 
| Firefox | Name :  Firefox | 
| 2.0.0.8 | Firefox version | 
| Last visit: | 2018.07.29 09:59 | 
| All Firefox user agent strings | |