This page contains online tools as well as downloadable files that should help you play or run a game online.
From the creators of MapTool, and one of the four core programs for playing and DMing with MapTool, DiceTool provides a plethora of ways to create, save, and roll complex dice strings.
One of the more well-known online dice rolling sites, Invisible Castle allows you to generate some rolls and provides an easy link to post in forums or paste into a chat for IRC games.
A simple point buy calculator based on the standard point buy system in the DMG.
Generate a Dark Heresy character, picking and choosing nearly every detail of your character. Another sup/tg/-original generator.
Generate a Warhammer Fantasy Roleplay character instantly! My very own online generator.
Generate a personality from a variety of traits from the tables in Dwarf Fortress.
A site with a variety of tools for D&D, including an online character sheet for easy linking to other players (requires free account).
Random dungeon generation, for inspiration or lazy DMs. donjon is best, gozzys.com is pretty, aarg.net has more options.
Stoutfierce MacBronzenail! Fierceaxe Pickstrong! Largeguts MacGrindercrag!
A pretty spiffy name generator that allows you to pick from a variety of real-world (and some fantasy) genres and locations, from African and Arabic to Norse Mythology to Hillbilly.
Pick a pattern of letters and a length, and it generates a random name-string that works great for fantasy characters
A collection of generators for a number of things, with universally hilarious results.
A nifty generator that creates a variety of planets and includes information such as size, climate, and any populations.
A basic generator that provides general info about planets.
Need some inspiration? Generate 3-5 random words and build from there.
What if Beowulf had access to nuclear power? What if the rise of Rome involved time travellers? What if electricity had been invented a thousand years earlier?
This fanfic is about the casts of The Lost Boys and That 70's Show at Hogwarts. Important to the plot: The Chaos Emeralds.
Boxes and boxes of weird and supernatural oddities, collected in the same warehouse in which the Ark of the Covenant is stored at the end of Indiana Jones...