Re:My New Favorite Tool for Reviewing PDFs: Okular
by tsmithe on Monday March 25, 2019 @07:15PM
(#19487685)
I found this, which seems to be a build of Okular for Windows: https://chocolatey.org/packages/okular
(I haven't tested it -- happy Okular Linux user here. It was linked from the site you linked, though.)
From a quick check now it is possible to install individual applications (Okular is not there):
https://community.kde.org/Windows
But it's not the same thing. At the times one was able to install the while kde4. That's a cross platform app!