Chromia is an open-source public blockchain that functions as both a standalone Layer-1 and an EVM-compatible Layer-2 for networks like Ethereum. It utilizes a unique relational blockchain architecture and a custom programming language called Rell, which is similar to SQL. This design enables efficient data handling, with each dApp operating on its own sidechain rooted to the main network.

The platform supports a variety of applications, including DeFi platforms like Hedget and games like My Neighbor Alice, by offering scalable infrastructure and customizable fee models. Its ecosystem facilitates decentralized storage and is developing an enhanced NFT standard. Chromia aims to provide improved data capabilities for next-generation dApps.