- Palladium Books - Publishers of Kevin Siembieda's Palladium system role playing games, including Beyond the Supernatural, Heroes Unlimited, Macross II, Nightbane, Ninjas and Superspies, Rifts, Robotech, Teenage Mutant Ninja Turtles and Other Strangeness.
- Chaosium Games - Publishers of Call of Cthulhu, Elric!, Pendragon, Nephilim RPGs as well as Starry Wisdom magazine and Mythos CCG. Chaosium were also the original publishers of RuneQuest.
- SSDC - Covers BattleLords and BloodDawn.
- Columbia Games - Publishers of Harn, a "magic-weak" FRP setting, and its detailed gazetteers and rules system, Harnmaster.
- Hero Wars - Glorantha - Issaries Inc., founded by Greg Stafford, publishes Hero Wars: Roleplaying in Glorantha. Information on the Hero Wars game, and the mythical world of Glorantha.
- Flying Buffalo Inc (FBI) - Flying Buffalo Inc is a game company (since 1970) specializing in play-by-mail games but also publishing role-playing game books (Tunnels and Trolls, Mercenaries, Spies and Private Eyes, Catalyst generic role playing books: Citybooks and GrimTooth's Traps) and other popular games such as the Nuclear War card game, Lost Worlds booklets.
- Alderac Entertainment Group - AEG is a publisher of Shadis Magazine - the source of information about hobby gaming industry. Most known AEG games: Shadis and Legend of the Five Rings.
- Apophis Consortium - Publisher of Obsidian and Shadow Nations. Site includes free supporting material for their games.
- Pinnacle Entertainment Group, Inc. - Pinnacle Entertainment Group publishes Deadlands and Brave New World.
- Atlas Games - A publisher of roleplaying games, card games, and board games, including Unknown Armies, Lunch Money, Over the Edge, On the Edge, Once Upon a Time, Ars Magica, Spammers.
- Dream Pod 9 - The home site of Dream Pod 9 on the web. With links to their products and online ordering available
- Fantasy Flight Games - Publishers of Anima, Dragonstar, Dawnforge, Dark Heresy and other RPG titles, alongside board games, card games and miniatures.
- Steve Jackson Games Home Page - Steve Jackson Games publishes roleplaying and card games, including GURPS, In Nomine, Dino Hunt, Knightmare Chess, Car Wars, Toon, and others. And Pyramid Magazine, which centres on the entire role-playing industry.
- Darkfuries - An independent d20 System electronic publisher of rpg accessories and supplements, founded by Brian K. Moseley.
- Heraldic Game Design - Publisher of Outsider Chronicles and SOL.
- RTalsorian Games - Developers of anime, Cybergeneration, Cyberpunk 2020, Castle Falkenstein and Mekton Z products. Game news, errata and links.
- Aetherco - Developer of Continuum, the time travel RPG, and Yamara, comic strip and RPG.
- Rogue Publishing - Publishes RPG adventures using the FUDGE Terra Incognita system most of which are available in PDF downloads. Their games cover wide variety of genres including mystery, psi-powers, supernatural, and horror.
- Galileo Games - Publisher of The Legend of Yore, a roleplaying game based in a fantasy medieval world.
- White Wolf Publishing - Publishers of the World of Darkness roleplaying games.
- Deep 7 - Publisher of 1PG, Arrowflight, Mean Streets, Red Dwarf, Santa's Soldiers, and various downloadable systems. Features online catalog and shopping, fan material, an art gallery, and a forum.
- RPGObjects - Open source and open gaming supporting developers of roleplaying games, websites, and software.
- Wingnut Games Homepage! - Dedicated to Cheap, humorous games - makers of OG, role-playing as cavemen and Battle Cattle.
- Burger Games - Finnish game company publishing games in Finnish and English.
- Three Fates Gaming - This site by designer J.C. Connors includes expansions and variants for his game Monsters Ravage America (Avalon Hill).
- Living Room Games - Licensed publishers of Earthdawn RPG.
- Sorcerers of the East Coast - FRPG with new and interesting spells, balanced combat, and percentile based skills. Artwork, maps, adventures and campaigns.
- IGS Games - Producer of free and commercial roleplaying systems. Also feature some free utilities, including a character generator and a name generator.
- Hex Entertainment - Produces the QAGS (Quick Ass Game System) RPG and supplements. Comics, and philosophy.
- Gaslight Press - Publisher of Everway, Earth and Sky, and Sun and Scale (d20 System).
- Heliograph, Inc. - Publisher of historically-based science fiction roleplaying games.
- Cumberland Games & Diversions - Tabletop RPG publisher specializing in electronic publishing. The Risus RPG, Sparks paper-miniature fonts, and the Fly From Evil crime-drama RPG.
- SteamLogic Editions Inc. - RPG publisher from Montreal who developed MechanicalDream(tm), an industrial fantasy roleplaying game.
- Precis Intermedia - Publisher of downloadable and print roleplaying and tabletop games and accessories. Includes discussion board, publisher's blog and online catalog.
- Firefly Games - The publisher of tabletop roleplaying games and other products in the adventure games industry including Monster Island: The Game of Giant Monster Combat.
- HinterWelt Enterprises - Publisher of Nebulon, Shades of Earth, and Tales of Gaea. Features additional material, forums, online shop, information about the developers, short story archive, and a character generator.
- Tab Creations - Creators of the Trystell fantasy setting: an easy-to-learn system with free Internet play.
- Atomic Sock Monkey - Includes a product list, purchasing and company information.
- Mystic Station Designs - RPG publishers designing and distributing Chivalry and Sorcery material, BITS Traveller, role-playing game utilities and medieval games.
- Valiant Games - Publisher of Hidden Legacy. Provides product information and online shopping.
- Grey Ghost Press - Company that publishes FUDGE, Gatecrasher, and other great Role-Playing game stuff. Includes other 3rd-party FUDGE game resources such as optional rules, magic systems, characters, monsters or creatures, adventures and campaign backgrounds.
- Battlefield Press, Inc. - Includes an online catalog, company information, convention scheduling, and product details.
- Cracked Mirror Publishing - Contains information on current and upcoming games.
- Dilly Green Bean Games - Creators of The Basic System line of role-playing games. Also publishes e-book games and game books.
- Moebius Adventures Website - The Moebius Adventures website is the central location for all information related to Moebius Adventures Roleplaying Games.
- Blue Devil Games - Game information for each of their products.
- World Builders Guild - Creators and manufacturers of d20 game and miniature accessories for various role-playing gaming worlds.
- lategaming - Developer and publisher of role-playing games, including titles by the now-defunct Crucible Design.
- Crafty Games - Publishers of the Spycraft line of RPGs. Includes a wiki, online community and a lot of free, supporting downloads.
- Lissner Publishing - Publisher of "Apocalypse: The New World" RPG.
- Convivium Central - An organization dedicated to Interactive Literature... role-playing games for people who don't play games.
- Holistic Design - Publishers of Fading Suns science-fiction roleplaying game, among others. Site includes forum for discussion of Holistic's games.
- Escape Ventures, Inc. - Publisher of Element Masters and Gatewar.
- 9th Level Games - The official KOBOLDS ATE MY BABY!The Beer and Pretzels RPG website. Includes game information, errata, free downloads, and maps.