Andargor's Home: Site contains an HTML searchable index of the 3.5 SRD, a windows help version of the 3.5 SRD, and now hosts the updated versions of Jamis Buck's NPC Generator.
Asmor: Demi-plane generator, martial arts technique generator, and monster and monster advancement generators.
Asmor's D&D Scripts: Demi-plane generator, martial arts technique generator, and monster and monster advancement generators.
D&D XML Tools: A project to create a XML format for D&D spells and monsters, and to encourage the development of software using that format.
d20 PlayersMap Software: Contains a download for playing online using chat and graphics. [Registration required]
dgsh - A D20 Dungeon Shell: A software tool that allows the dungeonmaster to track their party and their opponents with simple commands. It runs on any Java 1.4.x virtual machine.
DM Genie: Software suite for the d20 RPG allowing the creation and tracking of adventures and battles.
Dungeon Delver: Suite of shareware gaming utilities for the Palm OS.
Gnomish Inventions: Gives an online creation system for gnomish inventions in the DragonLance setting, but can be exported to any system.
Hero Workshop D&D 3e Character Generator: A shareware D20 character generator that features much of the material available for the D20 system. Has a working trial, but requires payment for a full version.
Javascript D&D 3.5 Character Generator: Generates a full character sheet directly from your browser.
Master Tools: Create characters, monsters, races, roll dice, and randomly generate things at will.
NPC Generator: Character, town, dungeon, and treasure generator.
PCGen: An open source java based character generator with rules for many d20 based games.
RolePlayingMaster: Software for players and dungeonmasters to generate characters, build adventures and craft full campaigns.
RPGXplorer: Professional character generation and rules database tool for fantasy role-playing games based on the Open Game License. Uses version 3.5 of the System Reference Document.
Steve's 3E Character Spreadsheet: Steve Mulhern offers a Microsoft Excel character sheet and spell list.