Streamr is a distributed open-source project, crowdfunded in 2017. The project's goal is to build the decentralized infrastructure for real-time data, replacing centralized message brokers with a global peer-to-peer network. By relying on cryptography instead of trust, the open-source network aims to enable data sharing and monetization in IoT and smart cities, business consortia, individual crowd selling through Data Unions and the decentralized web (Web 3.0).