The American Chamber of Commerce (AmCham) was founded in 1993 in Bratislava as an independent and self-supporting organization, entirely dependant on contributions from its members. Today, it serves as one of the most active foreign Chambers of Commerce in Slovakia. Currently, its membership has reached more than 330 international and Slovak companies, including many of the largest and important firms in Slovakia. Of this amount, approximately 23 % are American companies, about 42 % are Slovak companies and about 35 % are other nationalities.