SAHANA - Open Source Disaster Management System Sahana is a Free and Open Source Disaster Management system. It is a web based collaboration tool that addresses the common coordination problems during a disaster from finding missing people, managing aid, managing volunteers, tracking camps effectively between Government groups, the civil society (NGOs) and the victims themselves.
Microsoft Vine Microsoft Vine connects you to the people and places you care about most, when it matters. Stay in touch with family and friends, be informed when someone needs help. Get involved to create great communities. Use alerts, reports and your personal dashboard to stay in touch, informed and involved.
Google Wave An open source and open API tool for communication and collaboration on the web
Opensim Open Source Virtual Worlds Server accessible via Second Life Viewer with a modified -loginuri parameter
US Nexus from ECS ECS creates virtual worlds based training and simlation aids such as US Nexus. Demonstration videos for projects such as the US Joint State Response Training System (JSRTS) are available online.
MyBase - the US Air Force in Second Life Second Life regions for public outreach from the US Army, Navy, Air Force and other organinizations. Start at "MyBase" for an introduction. MyBase is a set of regions dedicated to sharing the history and learning about the U.S. Air Force.
Real Life Government Agencies using Second Life (GuSL) Mailing list is for people from real life government agencies around the world who are interested in or currently using Second Life. Used to share information that might be of interest to national and local government agencies, NGOs, and nonprofits.
Federal Consortium for Virtual Worlds FCVW supports individuals and organizations to improve government collaboration through the use of virtual worlds to enrich collaborative online experiences.
Blue Mars 2150 HD Virtual World for business, education and entertainment
Project Wonderland Sun led 3D virtual worlds project and community, especially for education
Unity3D Game develipment and 3D virtual world platform. More information here.