If you're wishing to run these on a Raspberry it might not be straightforward as they might depend on native code (often i686/x86_64) for the browser part. I just remembered I did a quick test using function node and Playwright on a Raspberry Pi to answer a question on the forum: Automate a screen capture?. This might help if the contrib node's don't work.
Edit: Oops, I remembered wrong and I didn't get it to work on a Raspberry as I mention on the topic. 
Edit 2: Nightmare.js used by the nbrowser node seems to run on a Raspberry (based on the latest comments) but the version required by contrib-nbrowser is 2.x while the newest is 3.x. I doubt it will work either.
Edit 3: Some say they've got it to work on a Raspberry with some hurdles.
