Treatment Action Campaign of South Africa
The Treatment Action Campaign of South Africa is the biggest and most important grassroots AIDS organization in the world.

Health GAP (Health Global Access Project)
Health GAP is a public policy organization that focuses on advocating for treatment and other services for people with AIDS in developing countries. Current campaigns include lobbying for money for the Global Fund for AIDS, TB and Malaria; combatting unfair trade practices that restrict access to life-saving medications; and compelling corporations to offer affordable AIDS medication to their workers.  

AIDSPAN
AIDSpan is a nonprofit organization that serves as a link between the Global Fund for AIDS, TB and Malaria and health advocates and officials worldwide. This web site contains a wealth of information about the Global Fund.

ACT UP (The AIDS Coalition to Unleash Power)
ACT UP, founded in New York, is a landmark, all-volunteer grassroots patient rights organization. ACT UP New York is doing exciting work and welcomes new people (their general body meetings are not their best feature, however). If you want to have a direct impact on the policies that affect people with AIDS in your community or around the world, join or start an ACT UP. Site includes activist resources and links to ACT UP Philadelphia, ACT UP Paris and other ACT UPs that have sprung up around the US and the world. The groups work together but each is separate, with a distinct culture.