Yet another fabulous NaNoWriMo-ish writing event brought to you by the crazy fans of the original deal. If you're looking for a NaNoWarmUp and July was just too crazy, try this!
sign-up required
Acrobat Buzzword
This is a pretty cool tool. It allows you to create your documents online and share them with others - others who can read, review, or be co-authors and make edits. A group of people in the #nanowrimo chat room helped me play with this and we had a fun time with it. Sign-up is required for all parties but it's free. Suggested by dream_weaver.
Julnowrimo
Want to NaNo more than once a year? Feel like writing a novel during summer vacation? Here's your shot. Check out the message boards and writing prompts. JulNoWriMo is a fan-created event based on the official NaNoWriMo.
Absolute Writer Forums
The link takes you right to everything a newbie needs to know about the forum. With a wide variety of topics and volumes of information, this is a good place to kick back with other people interested in writing. Sign-up is free. Recommended by Fulk.
Webpen
An online organizing tool to keep track of all your writing and break your projects down into simple, trackable pieces. Just sign up and start writing - great for having all your writing in one place.