There are a lot of gaming resources online, and I obviously haven't listed them all. I've attempted to list a selection of what I feel are the best; not just for d20 games, but for roleplaying in general (though I have restricted it to table-top gaming, with none of the many excellent sites dealing with computer gaming or CCGs). Each listing has a brief description of the site, and I will try to keep up on updating them. If you know of any sites that you think should be listed here, or if you run a site and would like to trade links, please contact me.

RPGNet is a wonderful comprehensive site. Great columns on a whole lot of issues covering issues all over the role-playing universe; Brief user-submitted reviews of a number of products, including board games, books, computer games, comics, software and more. The forum community here is one of the most active, and incredibly helpful and fun.

EN World is a great site that keeps tabs on the hottest news in the d20 world. They also have a good review section, with some good discussion between multiple reviewers.

Game Play News is a good stop for checking out the latest news in the gaming industry. Posts from publishers keep visitors abreast of the latest happenings, and there is also a good collection of articles and reviews, as well as some nice interviews.

DM's Familiar is a nice little program that can help you run combat, track rules, and give you a nice way to keep your campaign sorted. There's a free download, and the full version costs $29.95.