Partido Obrero (Workers Party - Argentina) - www.po.org.ar
Revolutionary Workers Party (EEK - Grecia) - http://www.eek.gr
Socialist Workers League (Palestina)
Associazione marxista rivoluzionaria Progetto comunista (Italia) - http://www.progettocomunista.it
Partido de los Trabajadores (Workers Party - Uruguay) - www.pt.org.uy
Partido Causa Operaria (Workers Cause - Brasil) - www.pco.org.br
former Trotskyist League / ITO (US) - ito.gn.apc.org/ito.html