A continuation of this series right here.
Knave, which is a cool and simple dungeon crawling game by Ben Milton. I found this one on the HD and have zero memory of picking it up. I'm sure it's a freebie download somewhere but I can't figure out who did it or where it lives. Basically this is a 3 page reference full of, well, market tables. Like, if you need an empty pot, some mediocre poison, or a whistle then this document hooks you up with prices and inventory slots. Cool. Useful.
Lost in the Wilderness is a random encounter table book for Neoclassical Geek Revival, an OSR-style RPG by Zzarchov Kowolski. It's kinda neat. It's artless and the font is too god damn small for my aging eyes, but it's still neat. You basically roll d8, d6, and d4 and the combination of results tells you what kind of encounter you're having, based on the terrain. For example, you are in a haunted forest and you roll 2, 4, and 1: dense trees wherein a witch is hiding near a weird shrine. Useful.
No Class Hack is exactly what it says on the tin. It's a hack of The Black Hack that removes classes and adds "Edges". I love this. If I run TBH this is what I'd prefer. It seems like a great tool to build a cool sword and sorcery game, for example. Also this book includes lots of cool modular rules.