WordPress Multiuser
WordPress Multiuser is a specialized version of the popular PHP-based blogging software that could be used for creating community-based blogs.
Using WordPress Multi-user edition you will be able to have people be able to sign up for a new blog and have them securely manage their templates and settings without affecting any other users. Only one blog per user is allowed, but you can have unlimited users, and you can have multiple users on a single blog.




I’ve also heard good things about Lyceum by ibiblio.org
Very informative blog
Thank you