Vanilla is an open-source, pluggable, themable, multi-lingual community-building solution. It is specially made to help small communities grow larger through SEO mojo, totally customizable social tools, and great user experience. Vanilla is also built with integration at the forefront, so it can seamlessly integrate with your existing website, blog, or custom-built application.
Vanilla’s major features include: forum, custom domain, custom theme, sso (single sing-on), stats, advanced role-management, and more. (see full list in Features )