Hey folks,
What kind of tools do you use for indexing your RPG PDF library? I have a few thousand files around[1] and I'm looking for ways to find, say, "all solo rulesets" or "all snake-themed scenarios, whatever the game system".
I have nothing against manual indexing/tagging (in fact I don't think anything else can work) but I'm looking for specific tools. My main requirements: self-hostable, free software, running under Linux or anything Unix-like, have to work with an existing file tree, preferably read-only.
I had a quick look around but nothing obvious came up.
[1] Yes, I get carried away sometimes.