#Kiwix is an app that lets you easily browse wiki and stackexchange sites offline.
It's extremely useful for people who cannot access a reliable internet connection for whatever reason. (For example, some sailors will download a copy of wikipedia onto Kiwix in port to browse it while at sea.)
Kiwix is available for Windows, Mac, Linux, Android and iOS:
You can also make a local Kiwix server on a Raspberry Pi:
@switchingsocial book of knowledge otg setup
@switchingsocial Odd question: do you know how large an offline Wikipedia is?
@switchingsocial i have arch wiki in my pocket.
mastodon.at is a microblogging site that federates with most instances on the Fediverse.