Toxic Bag Productions
- US company specializing in sound effects music CDs catered specifically for roleplaying.
- http://toxicbag.com/

Chessex Dice
- A major resource for dice and other role playing accessories.
- http://www.chessex.com/

Crystal Caste Dice
- A dice manufacturer offering the adventure game player a totally new shape for polyhedral dice.
- http://www.crystalcaste.com/

Four Horsemen Games
- Maker of DiceMat gaming accessory. Publisher of adventures and source materials using the d20 rules system.
- http://www.fourhorsemengames.com/

Magyss Studios
- Custom RPG character portraits, designs, and illustrations for fantasy, furry, World of Darkness, and Shadowrun game systems in graphite, pen, and CG-color.
- http://www.magyss.com/studios/

Lairs.com
- Lairs, chambers, and other short encounters for fantasy and science fiction role playing games.
- http://www.lairs.com