International Softball Federation (ISF)
Rules and regulations: http://www.internationalsoftball.com/english/
The International Softball Federation (ISF) holds the distinction for being the international governing body for the sport. It is recognized by the International Olympic Committee (IOC) and the General Association of International Sports Federations (GAISF).
Among ISF’s responsibilities include: organizing world championship competition in women's and men's fast pitch, junior women's and men's fast pitch, women's, men's and coed slow pitch and women's and men's modified pitch. Moreover, ISF also authorizes regional championships and provides technical support to Regional (Multi-Sport) Games. Being the governing body recognized by the OIC, ISF qualifies team for Olympic softball competition. ISF carries out activities in its headquarters in Plant City, Florida.