A selection of open source or free roleplaying game software packages.
A Dungeons and Dragons random dungeon generator complete with descriptions and encounters. Try the online version of Dungeon Generator.
A Dungeons and Dragons 3.5e random NPC generator that creates fully usable NPCs. Created by Jamis Buck. Try the online version of NPC Generator.
A D&D random treasure generator by item or encounter. Created by Jamis Buck. Try the online version of Treasure Generator.
Generates gear and equipment for NPCs. Created by Jonathan Jacobs.
AutoREALM is a Free GNU mapping software (a “cartographer”) that can design maps of castles, cities, dungeons and more. See the official site at AutoREALM – the GNU Mapper and AutoREALM
Dungeon Crafter III is a floorplan mapping application used to create graphical maps of dungeons for your roleplaying game. Use it to create highly detailed maps to hand out to your players or as a background for your table top miniature battles. Created by Shard Games – see the Dungeon Crafter III site for support and information.