The D20-Forge
- A user submission site containing different items, ideas, campaigns, stories, and rules.
- http://www.d20forge.com/

DnDResources
- Resource library of downloadable game materials: character sheets, forms, articles, programs, campaign information, games, websites, online utilities, and fantasy fonts.
- http://www.dndresources.com/

AtFantasy
- Collection of reader-submitted characters, campaigns, articles, rules, and links.
- http://www.atfantasy.com/