I like SumatraPDF. It's minimalist, to be sure, but it won't let you down.
I use Foxit reader. It's free and cross platform with great UI.
Agreed.
I’m 80% at requiring it for anyone at the company that doesn’t need full acrobat to create PDFs. And even then I’m close to pushing the version of FoxIt that does that.
Okular from KDE project, they have a windows release too.
I use okular and it works great on linux. Once in a while PDFs with forms display funny, or some minor challenges with data entry....but not sure if the issue is how the pdf was made or if okular. Nevertheless, i really like it. Plus as stated, a few KDE applications like okular happliy can be used on Windows. (For work machine, where i am forced to use Windows, i happily have used the Kate text editor.)
I think PDF Xchange is the most feature rich for what I use it for. You do have to buy once to unlock all functionality, but a very large amount is available in the free version.
On Linux: zathura, evince, okular for viewing. I don't know of a friendly GUI tool for editing PDFs, but combinations of imagemagick and tools such as pdfunite work well. A bit off-topic, but nomacs and imv are nice for images.
Master PDF. Cross platform even native linux support.
PDF viewing: Chrome
PDF editing: LibreOffice
In chrome://flags you can search for "PDF" and enable the following: Performs OCR on inaccessible PDFs, PDF XFA support, Accessible PDF Forms, Enable Region Search on PDF viewer.
I actually like PDF Expert better than Adobe itself. It is easier and more responsive for general editing work.