Founded in 2021, smlXL built tools for real-time blockchain transaction simulation, including sim Studio, which enables developers to simulate and replay transactions in real time. The company also developed iEVM, a proprietary Ethereum node using a specialized data format to provide rapid, detailed blockchain data. smlXL’s technology is now being integrated into Dune’s infrastructure to support developers and data-driven applications with faster, more flexible, and scalable access to on-chain data.