Mozilla BadgeKit is now available in private beta for select partner organizations that meet specific technical requirements. Alternatively, anyone can download the code from GitHub and implement it on their own servers.
We will continue to add additional BadgeKit features throughout 2014, including tools to support collecting, sharing and discovering badges.
You can apply for access to the private beta hosted version of BadgeKit at http://www.badgekit.org, or grab the code for each tool from Github.