Common Impact
- Not-for-profit corporation that matches teams of skilled corporate volunteers from leading companies to community nonprofits in need of assistance in the areas of IT, marketing, and human resources.
- http://www.commonimpact.org/

Boston Mobilization
- Community organization that educates, empowers, and organizes students and local residents to engage in grassroots campaigns for peace, economic justice, and genuine democracy. In Harvard Square.
- http://www.bostonmobilization.org/

Cambridge Housing Assistance Fund
- Raises funds to assist the homeless and near homeless with the startup costs of securing permanent housing. Site includes events, newsletter, and information for donors and sponsors.
- http://www.chafund.org/

Organizers' Collaborative
- Cambridge-based membership organization that helps non-profit and activist groups more effectively use computers and the Internet for communication and collaboration. Site includes organization info, tech tips for activists, and downloadable software.
- http://organizerscollaborative.org

Boston Research Center for the 21st Century
- International peace institute bringing together scholars and activists in dialogue on common values across cultures and religions. Site includes mission, events, and publications.
- http://www.brc21.org/

Cultural Survival
- Advocates the rights, voice and vision of indigenous peoples and their ability to determine their own futures on their own lands. Site includes news related to indigenous peoples, information on programs in Africa, Asia, and the Americas, film reviews, pu
- http://www.cs.org/

Cambridge Action Fund
- A collaborative of businesses and citizens committed to sharing a portion of our income to improve the quality of life in our community for all citizens. Site includes FAQ, annual reports, and application for funding.
- http://www.cambridgeactionfund.org/

Greater Boston Physicians for Social Responsibility
- An affiliate of Physicians for Social Responsibility, working to address the health consequences of nuclear weapons, environmental degradation, and violence.
- http://psr.igc.org/

Cambridge Citizens for Smokers' Rights
- Discussion of the rights of tobacco users in Cambridge, with a focus on pending legislation.
- http://www.ccsr.org/

Cambridge Historical Society
- Dedicated to collecting, preserving and interpreting the social and architectural history of Cambridge, Massachusetts.
- http://www.cambridgehistory.org/

Cambridge Area 4 Neighborhood Coalition
- Informational and advocacy group for the Neighborhood 4 section of Cambridge (between Central and Kendall Squares).
- http://web.mit.edu/dryfoo/www/Area4/

MIT Societo por Esperanto
- A student run organization for people who want to get together and learn Esperanto.
- http://web.mit.edu/esperanto/

Bruner Foundation
- Provides annual award for urban excellence and forums for the discussion of issues related to urban architecture, planning, and revitalization.
- http://www.brunerfoundation.org/

The Women's Center
- Central Square home of support, social, and political activism groups for women. Site includes contact information.
- http://www.cambridgewomenscenter.org/

Alewife Study Group
- Neighborhood group concerned about development and environmental issues that impact the Alewife region of North Cambridge.
- http://www.alewife.org/