Kiwix offers downloadable mirrors of the various StackExchange sites. I haven't played with 'em to see how searchable they are, but there's something to be said

Kiwix offers downloadable mirrors of the various StackExchange sites. I haven't played with 'em to see how searchable they are, but there's something to be said for keeping a local copy. Of that, and a Debian mirror, and maybe the top ten-thousand github repos or something...