The Foundation for Sustainability and Equality, known as ALIARSE, is an initiative promoted by public institutions and private companies which, aware of the economic, social, and environmental challenges faced by the country, and exercising their social responsibility, have joined forces to contribute to national development, social justice, and sustainability.
The organization was created in 2006 by a group of professionals who had become aware of the scope and impact of public-private partnerships. Since its creation, ALIARSE became a catalytic agent for public and private interaction in the search for the common good.
To achieve its mission, ALIARSE conducts research, training, and consulting activities, as well as design and management of public-private partnerships for development (PPPDs) in the fields of local development, education, health, and the environment. Besides, ALIARSE also carries out research, training, and consulting activities on public-private associations (PPAs) for the development of infrastructure and the provision of quality public services at efficient prices.

ALIARSE has carried out research projects for the Interamerican Development Bank, UNEP, World Health Organization (WHO), Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), The Partnering Initiative (TPI), International Youth Foundation, and ZEEZN. It has developed training programs for national and multinational companies and public institutions, such as OECD; the Ministry of Public Education; the Ministry of Planning; the Ministry of Economy, Industry and Trade; INTEL; and the University of Costa Rica. It has conducted consultancies for BAC and FEMSA and has managed projects together with such diverse organizations as Hewlett Packard, Amazon, CEMEX, the Clínica Bíblica Hospital, the Cleveland Foundation, Coca Cola Foundation, MAPFRE Foundation, Fundecooperación, CRUSA Foundation, UNDP, JICA, and the Government of the United Kingdom, among others.