The unofficial wiki for White Wolf Publishing's Old World of Darkness. Here you'll find information about the games, metaplot, and constituent groups.
Anders Sandberg's Eclipse Phase resources.
I think this is every question ever answered in the Sage Advice of Dragon Magazine through its entire publication history.
An archive of Eclipse Phase fiction at fanfiction.net.
A group of dedicated gamers record some of their sessions of play and publish them as podcasts for the rest of us to listen to. If you're not sure if you'll like a game, or if you think you're not running something correctly, see if they've run a session or two of your game and see how they did it.
A martial arts system for Eclipse Phase.
rpg eclipsephase supplement combat martialarts
The C'thulhu Mythos in the modern day (kinda). UFOs, the paranormal, and a horse doctor's dose of government black ops.
A web application that lets you randomly generate the contents of a greenbox (a hidden stash of equipment) for the tabletop RPG Delta Green. The Generator will also let you add your own items to the database.
Access to Arasaka. Cyberpunk 2020-style techno, ideal for background music in RPGs.
A blog post describing the 5x5 method of designing adventures and campaigns for role-playing games.
A website that generates pseudo-random codenames. Perfect for gamers everywhere.
A tabletop RPG written by /tg/ on 4chan called Server Crash. It's a modern cyberpunk game set entirely in Cyberspace. Repurposes many /b/ memes as background material.
A wiki intended for the game Delta Green by the denizens of the D-G mailing list. Contains speculation and discussion of elements of the metaplot, story ideas, additions to the game setting, adventures, and more. Much of this information is repurposable for other game settings (like GURPS, Conspiracy-X, and possibly Eclipse Phase), though anything that specifically references CoC or D20 rules will need to be rewritten.
A site that teaches you how to play in a tabletop RPG if you've never done so before (but are interested).
This is a simple web app that generates pseudorandom descriptions of weird symbols. Perfect for RPGs or online RP.
A podcast dedicated to the tabletop RPG Shadowrun.
Generates random job titles on demand.
The Wasteland Suite is a collection of utilities that let you hack the PC RPG Wasteland (yes, it's an old game, it's still fun). Lets you decompile the game files so you can modify the graphics, maps, monsters, characters, and the whole game if you want. Knowing XML (because it translates the mechanics to and from their native binary format) helps but isn't essential. Written in Java. I used it for un-b0rking my saved games. :)
Somebody wrote a netbook for playing in the Chronicles of Amber using GURPS.
H-Rep is a fairly active Eclipse Phase fan blog that posts not only ideas and drop-ins, but news about the game as it appears. RPG eclipsephase
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