STOP AIDS Project (SAP) was a nonprofit organization which worked to prevent transmission of HIV among all gay, bisexual, and trans men in San Francisco, California, through multicultural, community based organising.

[2] Research & Decisions Corporation, under contract, conducted a series of focus groups to gather the information requested by the San Francisco AIDS Foundation.

[citation needed] After completion of the survey, Larry Bye of Research & Decisions Corporation and Sam Puckett of the San Francisco AIDS Foundation began formulating a concept for grass-roots-inspired social change.

[citation needed] The result of this presentation was a one-time grant from the city for $75,000 to conduct a pilot project that would allow 1,000 gay and bisexual men to participate.

Through the work of the small initial corps of staff and consultants, participants were recruited to attend the first group sessions, which were called STOP AIDS meetings.

[3] Internationally recognized as a successful model of grassroots prevention and support, SAP brought diverse gay, bisexual, and trans men together to talk about the challenges and issues posed by HIV and AIDS through neighborhood outreach, for example on busy streets or outside bars and nightclubs; workshops, often held in the living rooms of residents; and community forums.

Such outreach took form in many ways, including clothing, pins, stickers, risk assessment surveys, condoms, safe injection kits, and other miscellaneous objects.

[5] Their work extended beyond education—helping change behavior, create personal commitment to safer sex, build community support for each individual with the vision that "HIV Transmission Can Be Prevented".

As larger numbers of people are contacted and participate in this expanding dialogue about AIDS prevention, a critical shift in attitude influences risk behavior change in the entire community.