http://openacs.org/ OpenACS is a toolkit for building scalable, community-oriented web applications.
http://www.km4dev.org/ Knowledge Management for Development (KM4Dev) is a community of international development practitioners who are interested in knowledge management and knowledge sharing issues and approaches.
Infed.org http://infed.org/ infed is a not-for-profit site provided by the YMCA George Williams College. we specialize in the theory and practice of informal education, social pedagogy, lifelong learning, social action, and community learning and development. Index of /archives/e-texts http://infed.org/archives/e-texts/
http://www.wikitree.com/ We are a community of genealogists dedicated to growing an accurate single family tree using DNA and traditional genealogical sources. Our community’s mission is to grow an accurate single family tree that connects us all and is freely available to us all. Free Wiki Space http://www.wikispace.com/ WikiTree’s Free-Space Profiles are free wiki pages for…
https://www.humanitarianexplorer.com/ Humanitarian Explorer is a news and philanthropic platform with a mission to connect people who share a heart to help those in greatest need of life’s necessities around the world.