League (Trotskyism), founded in 2019 International Socialist Tendency (Trotskyism), founded in 1958 International Workers' Association (anarcho-syndicalism), founded in 1922 International Workers League – Fourth International (Trotskyism), founded in 1982 League for the Fifth International (Trotskyism), founded in 1989 League for the Fourth International (Trotskyism), founded in 1996 Liberal International (liberalism), founded in 1947 and constituted by the Oxford Manifesto Muslim Brotherhood (Islamism), founded in 1928 Hizb ut-Tahrir (Islamism), founded in 1958 Pirate Parties International (pirate politics), founded in 2010 Progressive Alliance (social democracy and progressivism), a network of centre-left parties formed as a rival to the Socialist International in 2013 Progressive International (democratic socialism and progressivism), an organization uniting progressive left-wing activists and organizations, formed in 2020 Socialist International (social democracy), founded in 1951 Trotskyist Fraction – Fourth International (Trotskyism), founded in 2004 World Socialist Movement (Marxism), founded in 1904 World Union of National Socialists (Nazism), founded in 1962 Defunct Alliance of Democrats (liberalism), gathering groups similar in outlook to the European Democratic Party and the United States Democratic Party founded in 2005, but inactive since 2012 Anarchist St. Imier International (anarchism), formed after the expulsion of the anarchists from the First International by the Marxist faction at the Hague Congress, founded in 1872 and defunct by 1877 International Agrarian Bureau (agrarianism), operating from 1921 to 1972 International Entente of Radical and Similar Democratic Parties (radicalism and liberalism), operating from 1923 to 1938 Committee for a Workers' International (Trotskyism), founded in 1974 Communist International (revolutionary socialism), also known as Comintern and the Third International, a federation of communist parties founded in 1919 by Vladimir Lenin and dissolved in 1943 by Joseph Stalin E2D International (E-democracy, direct democracy), founded on 1 January 2011, but inactive since 29 August 2013 Fascist International (fascism), also known as the 1934 Montreux Fascist conference, a conference of European fascist parties held on 16–17 December 1934 in Montreux, Switzerland International Libertarian Solidarity (anarchism), founded in 2001 International Communist Seminar (Marxism–Leninism), founded in 1996 and defunct by 2014 International Conference of Marxist–Leninist Parties and Organizations (International Newsletter), founded in 1998, defunct by 2017 International Revolutionary Marxist Centre (Centrist Marxism), founded in 1932 and dissolved in 1940 International Workingmen's Association (communism, anarchism and revolutionary socialism), commonly known as the First International, founded in 1864 and defunct by 1876 International Working People's Association (anarchism), also known as the Black International, founded in 1881 and defunct by 1886 Revolutionary Internationalist