HTTrack: Download entire site to a local computer to view later.
Many useful websites come and go -- if it's just one page, print out as PDF. But it's entire site or portion of a site, use this program to download the content of the site to save permanently. Archive.org helps, but often many sites are not available there.
- Wiki, https://en.wikipedia.org/wiki/HTTrack
- Code, https://github.com/xroche/httrack
- Download, https://www.httrack.com/page/2/