I am looking for a good, minimalist PDF viewer. If it has a feature that blocks distractions while reading, that would be great as well.
It should run on Windows 10 and if it's Open Source then even better.
Have you tried Xodo? I bet you will like it since you want something minimal, yet powerful.
Also check it in Google Play/App Store for your other devices, if you like.
There is a Windows port of the Linux PDF reader "Evince". It's a port of the Gnome 2 version, so is nice and basic compared to, say, a Gnome 3 application. And as you requested, it is open-source.
I've been using it since October 2017 on Windows 10 without many problems. In fact, the only problems I've encountered have been in the last two weeks, when multiple copies of the same document have been opened and I've tried to close them using the Windows 10 taskbar.
The most recent version for Windows is 188.8.131.52.
The original download link was
The .msi file has now been taken down from there, but you can still get it by going to:
Windows 10 is not listed in the supported OS versions, but as I say, it still worked for me for over four years on Win 10.
When you've downloaded the .msi, check the md5sum to make sure it downloaded OK - it should be: