In the Czech Republic there are currently 10 official Jewish communities with about 3,000 registered members, of which 1,500 reside in Prague. It is estimated there are an additional 10,000 to 15,000 unregistered Jews. There also are a number of various Jewish organizations under the auspices of the Federation of Jewish Communities in the Czech Republic, e.g., the Open Prague Jewish community Bejt Praha comprised mainly of expatriate Americans and other foreigners, Chabad House, the Union of Jewish Youth, Maccabi and Hakoach sporting clubs, the Women’s Zionist Organization (WIZO), Jewish Liberal Community