State institutions, working with children at a national level and their regional structures : State Agency for child protection, Ministry of Labor and Social Policy and the Agency for social assistance, Ministry of Education, Youth and Science, Ministry of Interior;

Local authorities – municipalities of Sofia, Turgovishte, Sevlievo, Veliko Tarnovo, Sevlievo, Smolyan, Stara Zagora, Vratza, Lovetch, Dryanovo, Gabrovo, Ljaskovets, etc;

NGOs – members of the "Social policy" platform, of the National network for the Child as well as other NGOs active in the area of children rights and social services for children and families;

ISS-Bulgaria acts as a correspondent in the International Social Service Network based in Geneva, Switzerland