The University of Illinois at Chicago hosts the Urban Forum, a national event designed to advance the dialogue about the future of urban communities. It is run by Howard Wial who is an expert on gentrification and a professor at UIC.
The MacArthur Foundation does lots of different kinds of work to “make the world better,” but they have lots of great information available about gentrification.
The Urban Democracy Lab promotes sustainable forms of urbanism.
Athens for Everyone is a grassroots organization that promotes equality and social justice, and that works toward reducing poverty in Athens. They have hosted several panels about gentrification in Athens.
The Athens Land Trust helps stop gentrification into culturally significant areas in Athens-Clarke County, such as the Hancock Neighborhood in East Athens.