ARM Minimalist system using logarithmic scales for all game mechanics. ftp://ftp.trawna.com/pub/rpg/games/arm

Oroborus multi-genre RPG Rules light, point allocation, skill based game from Ragnarok Press. http://www.ragnarokpress.com/oroborus/

DCS A simple role-playing engine, which can be customised for various game worlds and game types. http://www.geocities.com/Area51/Vault/4947/dcshome.html

GURPS Lite Free 32 page PDF version of the GURPS rules. "Covers the essentials of character creation, combat, success rolls, magic, adventuring, and game mastering." http://www.sjgames.com/gurps/lite/

Gestalt - Innovative Roleplaying Web Site of the Gestalt Roleplaying System. Featuring system rules and scenarios for free download. "Coming soon". http://website.lineone.net/~james.graham/Home.html

Hyper Generic role-playing game. Official site. http://members.tripod.com/~ynam/hyper/

SLUG (Simple, Laid-back Universal Game) Copyright 1992 & 1993 By Steffan O'Sullivan http://www.homebrew.net/games/slug.html

UniSys-Universal System A Free-RPG with the goal of being the most played free-RPG in the world. UniSys is a realistic, advanced, fast and detailed universal roleplaying game. . http://www.unisys.mobilixnet.dk

Storytelling20 A "storytelling-oriented" game with rules available in English and Italian. http://gilda.it/storytelling20/

FERpg The "Fast and Easy RPG", a small coin- and dice-based system. Includes two campaign settings. http://www.sunnet.net/nhill/ferpg/ferpg.html

The Window Flexible, modular rules built around three gaming precepts. http://www.mimgames.com/window/

RIP Diceless system. Includes sample dark future and fantasy campaigns. http://www.cs.helsinki.fi/u/marjola/RIP/

The Guide to Adventure Includes fantasy and science fiction campaign settings. http://www.meramic.com/tgta/

EGO-Endless Gaming Options A simple, universal system, with a stable core rule, a complete foundation, and plenty of room for modifications. Free to all. http://savage.gq.nu/egowebmain.htm

Ex Mortis V 1.0 BRPS Ex Mortis base role playing system. Free to the public. Fully functional RPG. http://www.angelfire.com/games3/exmortis/

JAGS An extensive universal system with supplements for psionics, chi martial arts, cybernetics, superpowers, and magic. http://jagsgame.dyndns.org/jags/index.jsp

Cosmic Synchronicity RPG A free RPG that incorporates concepts of Jungian psychology and Robert Anton Wilson's writings to produce a multi-genre cross-worlds playing environment. http://www.fantasylibrary.com/lounge/cosmic/cosmic.htm

Quasar Role-Playing Game Public domain rules intended for family-friendly roleplaying. http://www.conroyhome.net/alan/quasar/index.htm

The Osprey Open Source Roleplaying Engine A point-based, skill-based roleplaying game distributed under an Open Content license. http://home.nc.rr.com/archer7/rpg.html

Prism A versatile multi-genre free RPG by Frank J. Perricone. It is a modular system originally intended for use with Rolemaster's combat system. Over 100 pages, illustrated. http://www.rpglibrary.org/systems/prism/