PDF reader recommendation?
I find Adobe's policy of nagging me to permit a background process to check for updates unacceptable. I've looked for free alternatives. So far, I've found that Books meets my simple needs. However it aggressively puts things in its library, which I do not desire. I look at very many pdfs and have no use for another way to store them. Moreover, it seems they have removed their Hide functionality, and attempting to remove a pdf from the library results in removing it from my file system as well - a totally inappropriate step. Of course I can make a copy before opening in Books, but feel I shouldn't have to.
Can anyone recommend a simple, free pdf reader, with a bit of markup functionality for collaboration?
iMac 21.5″, macOS 10.15