User Agent

Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36 OPR/60.0.3255.109

This user agent belongs to Opera. Opera Software ASA developed this Browser. This Browser run on Win8.1 and it renders web contents with Blink on Windows Desktop.

Browser - Opera

Opera

Version60 @ 64 bit
DeveloperOpera Software ASA
ParentOpera 60
Platform windows 6.3 (64 bit) by Microsoft Corporation
Device TypeDesktop

Act as 

Mobile No
Tablet No
Crawler No
Fake No
Anonymized No

Capabilities

Rendering EngineBlink by Google Inc (a WebKit Fork by Google)
Pointingmouse
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes
Frames Yes
IFrames Yes
Background Sounds No
Java Applets No
VB Script No
Activex No