An internal wiki like Docuwiki or wiki.js might suit your needs. Although they won’t automatically categorize\classify anything, it could be a useful searchable repository (especially if you can train your team in standardizing descriptions\tags\categories\etc).

I started reading Mort (Terry Pratchett) and it reminded me of the Discworld MUD I played with my friends in the 90s, on dial-up, all crowded around a single 13" CRT. I looked it up, and it’s still running!

So… How long were these neglected left to thrive before they transitioned into these magnificent beasts?