I am specifically asking about software and needed libraries, not stuff like Wikipedia or the writings of Ernest Hemmingway.
To keep people from archiving all of github on thousands of shucked external hard drives cobbled together all Frankenstein-y to create a postapocalyptic data center assume a ~1TB storage limitation. Though I’m sure that person exists here on Lemmy somewhere :D
Besides the basics (operating systems, compilers, office, CAD, database, etc software):
A copy of open street map together with the linked Wikipedia articles, along with the software to view and edit them. I know you said no wikipedia, (since that’s pretty much a given), but this is basically the hitchhiker’s guide to the galaxy.
A copy of Godot’s editor so people can still make games.
As many games as I could fit in the remaining space, concentrating on the ones that give you the most bang for your buck in terms of space.