[clarification needed][1] It provides computer and communication services to individuals, collectives and left-wing, anti-capitalist and anti-fascist organisations in Spain and Latin America.
The project is managed by the association "Nodo50: Altavoz por la Libertad de Expresión y Comunicación".
[2] It began as a communication tool for the "Foro 50 años bastan", a meeting against the IMF and World Bank celebration in Madrid in 1994, which was promoted by the NGO Sodepaz.
The tool received technical support from Alberto J. Jiménez of BBS Revolware and Russell Gasser.
[3] Nodo50's members include a wide range of left-wing movements such as environmentalism (Ecologistas en Acción), anti-militarism (Grupo Antimilitarista Tortuga), pacifism, feminism (Mujeres en Red), trade unionism (sections of the CGT, CNT or CCOO), free and community radio (Radio Vallekas), liberation theology, social centres, defence of public services and social welfare; in general, sites advocating socialism or anti-globalisation.