Harvard Gay and Lesbian Caucus
- More than 2,200 gay, lesbian, bisexual and transgendered Harvard and Radcliffe alumni/ae, faculty, and staff.
- http://www.hglc.org/

Gay & Lesbian Athletics Foundation
- Cambridge-based sports and athletics organization dedicated to ending discrimination based on sexual orientation in athletics. Site includes information about directors, events, and sponsors.
- http://www.glaf.org/

Gay Men's Domestic Violence Project
- Provide community education and direct services to gay, bisexual, and transgendered male victims and survivors of domestic violence.
- http://www.gmdvp.org/

Alternative Family Matters
- Provides guidance, counseling, and resources for helping lesbians and gay men have children through adoption, foster care, insemination, and surrogacy.
- http://www.alternativefamilies.org/

Project 10 East
- "Building a safe space for gay, lesbian, bisexual, and transgender youth and their allies." Site includes information about meetings, drop-in centers, and other resources.
- http://www.project10east.org/

GaMIT
- Is an organization devoted to insuring the existence of a queer-positive environment at MIT.
- http://web.mit.edu/gamit/www/