OSB Alliance is the Bundesverband für digitale Souveränität (Federal Association for Digital Sovereignty). They are a leading organization in promoting and advocating for open-source software and business models in Germany. Their mission is to advance the use of open-source technology to ensure digital sovereignty and create a level playing field in the digital market.

OSB Alliance offers a wide range of services and products to their members and the public. They provide a platform for collaboration and networking through working groups and events. Their working groups focus on various areas such as procurement, cloud computing, education, security, and more.

They also conduct research studies, publish publications, and provide statements and open letters to address important issues in the field. Additionally, OSB Alliance offers a forum for digital sovereignty, the OS im Public Sector project, and the Sovereign Cloud Stack (SCS) project. These initiatives aim to promote the use of open-source software in the public sector and develop a digital sovereign cloud for administration.

Joining OSB Alliance offers individuals and organizations the opportunity to be part of the open-source movement, contribute to policy discussions, and access resources and expertise in the field