User Agent

Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0

This user agent belongs to Firefox. Mozilla Foundation developed this Browser. This Browser run on Win8.1 and it renders web contents with Gecko on Windows Desktop.

Browser-Firefox

Firefox

Version 100.0 @ 64 bit
Developer Mozilla Foundation
Parent Firefox 100.0
Platform windows 6.3 (64 bit) by Microsoft Corporation
Device Type Desktop

Act as 

Mobile No
Tablet No
Crawler No
Fake No
Anonymized No

Capabilities

 

Rendering Engine Gecko by Mozilla Foundation (For Firefox, Camino, K-Meleon, SeaMonkey, Netscape, and other Gecko-based browsers.)
Pointing mouse
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes

 

Frames Yes
IFrames Yes
Background Sounds No
Java Applets Yes
VB Script No
Activex No