Web archival
https://github.com/alphapapa/org-web-tools thread with recommendations where much of this info was sourced from paid, software-as-a-service, but probably the best solution for organizations
There's wget, obviously, plus Archive Team's fork of it. There is httrack, which is what I normally use.
https://archivebox.io/ self hostable archival tool seems to be written in Python, so might be possible to package for Guix. Oh… and some NPM packages too. Sigh.
download images that are loaded in parts Wayback Machine downloader turn youtube videos into web pages
https://leetusman.com/archiving-artist-spaces/reading.html
Web Archiving Community · ArchiveBox/ArchiveBox Wiki · GitHub Webrecorder: Web Archiving for All