Be the Media: A role playing game about documentary filmmakers trying to right wrongs in their communities. The main file is three pages. The first page is a character sheet and all the rules on one page. It’s all you need. There’s also a GM reference sheet with rules and space to write notes instead of a character sheet, and a final page with credits, story seeds, and links to additional references. There’s also a character keeper for online play.
Apocalypse World stuff
World of Maelstrom: A small game that attempts to be for Apocalypse World what World of Dungeons is for Dungeon World.
Old School Gaming
Brauntstein Resources A collection of links and resources for Braunstein, predecessor to D&D and possibly the first modern role playing game.
Low Hack Low fantasy classes for the Black Hack 1E.
Weirdie Workbook for Rules to the Game of Dungeon.
Today’s World a game about the strangeness of modern living.
Destiny City random tables and ready made places, factions, and NPCs for modern settings.