The Open Planning Project
http://www.openplans.org/

OpenPlans aims to transform social activism by providing tools that connect people and enable them to share ideas, stay organized, and act collectively to effect change. Whether you are advocating for public space or working towards better schools, they hope you use OpenPlans to make your community a better place. Their tools help you create or contribute to web sites, share files, upload photos, manage mailing lists, and manage task lists. OpenPlans is collaborative software so most pages are editable. It takes just seconds to register and, once you log in, you can start your own project or contribute to an existing one. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.