SONNE-International was founded in 2002. Since then, they have been involved in international development cooperation. Their head office is in Austria (Vienna). In Myanmar, SONNE-International is represented by the locally registered sister organization SONNE Social Organization (SSO)  , in Bangladesh by SONNE-Bangladesh. In their other project countries, they cooperate with long-established and trusted partner organizations.

Together with their cooperation partners (public sponsors in Austria and foundations such as the Else Kröner-Fresenius Foundation in Germany), they support disadvantaged people in their priority countries (India, Myanmar, Bangladesh and Ethiopia) primarily through education and training projects, income-generating projects and basic medical care and educational projects. They provide access to education (including 21 schools in Bangladesh and 3 day care centers in Myanmar) and / or vocational training and to provide basic medical care. But they are also particularly proud of their extremely low administrative costs in Austria (a lot of voluntary work, only 2 full-time employees and 4 marginal employees!). Since 2005 they carry the Austrian Donation Seal.