The Workgroup on a Solidarity Socio-Economy (WSSE) is a global network of debate among grassroots actors, researchers and committed people who collectively generate and promote proposals and strategies for socio-economic transformation.

The WSSE is part of the Alliance for a Responsible, Plural and United World (Alliance 21), a broader informal network which has been funded, since its creation, by the Charles Léopold Mayer Foundation.