EU Open Internet Stack

The Open Internet Stack Initiative will fund development of end-user applications and underlying technologies for European sovereign digital commons. It has over €40 million dedicated within two Horizon Europe calls worth €307.3 million under the 'Digital, Industry and Space' cluster. The calls also support trustworthy AI, data services, robotics, quantum technologies, photonics and virtual worlds. Businesses, public administrations, academia and other entities from Member States and partner countries can apply until 15 April 2026.