APELL (Association Professionnelle Européenne du Logiciel Libre) is Europe's Open Source Business Association founded in 2020 to bring together national Open Source organizations. It aims to provide peer support, collective marketing, capacity building and policy support for its members. While the European Commission sees Open Source as important for digital sovereignty, adoption varies by country. APELL seeks to foster cooperation among European Open Source companies and associations, promote the industry to policymakers, and connect companies to pursue mergers and acquisitions.