Yeah, they’ve been doing this sort of thing for quite a while.

Kiwix isn’t a web browser exactly and doesn’t download web pages the way your browser saves them. It uses a specialized file format, and it can be used to back up an entire site. For instance the kiwix library has an offline copy of wikipedia (no images), but it weighs in at more than 100GB last I looked.

OsmAnd usually.

OSM

As much as I’m not terribly fond of the guy, IIRC he’s 36, which makes ‘88’ likely short for 1988, the year he was born.

I just run a shaarli instance on an old laptop and keep all my bookmarks there and just access it from where/whatever.