Streamr is a peer-to-peer pub/sub network for streaming data and real-time messaging. Web3 projects typically see Streamr as middleware. Streamr is used inside oracles, IoT pipelines, messaging apps, and all sorts of event-driven applications. Streamr is used as the data delivery network for the RedStone oracle and for the LogStore time series database. These applications use Streamr to deliver the data to and from Arweave for permanent storage with end-to-end decentralization.