Zeega is an open-source HTML5 platform revolutionizing web publishing and interactive storytelling for a future beyond blogs. To read more about Zeega go to zeega.com.
Sign up at http://alpha.zeega.org/register/.
Zeega is still in development, so the code is changing fast. If you want to install or extend Zeega check the developer resources from the wiki.
If run into any issues or have any questions reach out on the Zeega Dev Google Group or at the #zeega IRC channel on Freenode.