PBworks provides a broad set of collaboration products that help businesses work more efficiently and effectively. Products such as Agency Hub, Legal Hub, and Project Hub serve markets such as advertising and marketing agencies, law firms, and education, as well as the broader business market. Millions use PBworks each month for partner/client collaboration, new business development, project management, social intranets, and knowledge management. Get Started for Free!
Wiki Hub
https://plans.pbworks.com/network/premium_25
Sign up for a free Wiki Hub account.
EduHub
https://plans.pbworks.com/academic
Basic plan available for free.
Learning Lovers.org 