The North American Gay Amateur Athletic Alliance (NAGAAA) was created in 1977 to be a non-profit, international organization comprised of men and women dedicated to promoting amateur athletics specifically for the gay and lesbian community. NAGAAA was formed to encourage and promote the participation of gay men and women in organized softball competition. Currently, 54 cities that make up the membership of NAGAAA in the United States and Canada.  In the 2023 Winter Meetings held in Minneapolis, NAGAAA welcomed Pittsburg, PA and Cincinatti, OH as new member cities.  The Denver Area Softball League (DASL) is the only NAGAAA member organization in Denver and in Colorado.  2023 will be an exciting year for NAGAAA as the organization will be celebrating its 46th Anniversary and will be hosting the 2023 GSWS in Minneapolis, MN come August 28 - September 4.

There is one division in NAGAAA: Open Division. In the Open division, teams may be comprised of both men and women. The Open division is divided into seven subdivisions: A, B, C, D, E, Masters C and Masters D. These subdivisions pertain to the competitive level of play; "A" being the most competitive and "E " the least (hence called "recreational").

NAGAAA provides leagues with the opportunity to travel to member cities in order to meet and compete with LGBTQ+ athletes from across North America. Some join for the competition while others for the socials and networking potentials. In its annual spring meetings, usually held in February, NAGAAA informs member cities of upcoming tournaments among its membership, paramount amongst these tournaments is the Gay Softball World Series (GSWS) held each year in a different member city of NAGAAA. Every member league is encouraged to send at least one team to each GSWS as its representative.