Edge Browser (Preinstalled on Windows 10)
Windows 7 and Windows 8/8.1
Internet Explorer 11 (Preinstalled on Windows 7 and 8/8.1)
(WIndows XP is no longer supported from Microsoft. Most modern webrowsers will no longer work for it.)
In case you still need a pdf reader you can download and install Adobe Acrobat Reader DC.
Safari (Already preinstalled on MacOS devices.)
Safair (Already built into modern versions of IOS.)