I wonder why there aren't ever any positive viruses. You'd think they'd be more successful, evolution wise, since people would try to stay sick. There's helpful bacteria, after all.
The City of Greyhawk - For 2e there was this boxed set about Greyhawk. No idea how closely it resembled the actual Greyhawk or if it's good. $9.99 and
Grudge Immortal - Japanese horror adventure for LotFP. May or may not include tentacles. $7 and 40 pages.
Hexed Places - Bitterblack Forest - I probably shouldn't make a joke about this. Hex-crawl, 12 pages, $2.69
Stars Without Number Revised Edition - Presumably still a mash-up of D&D and Classic Traveller. $19.99 and there is a free version as well (minus some stuff)
Unstable Potions for LL - PWYW
White Box Arcana - 32 pages, $1.99
Dyson Logos Commercial Map Pack 1 - TBH, his dungeon drawling style is not my favorite, but $19.99 for 170 maps that can be used for commercial purposes is a steal. Also seemingly includes cities and other stuff
NPC Creator and Emulator - Not really OSR related, but I am a sucker for these sort of things to help flesh out NPCs. $1 and 16 pages.
RPG Pundit Presents #13: Dragon Corpses - What to do with a dragon corpse. I remember once playing an Alchemist character (from Dragon, I guess) and driving everyone crazy by taking all the blood and such from monsters we'd kill.