# Sei

> An EVM-compatible blockchain for trading and financial applications

Sei is a Layer 1 blockchain for building and using applications that need fast transaction processing, including trading platforms, payments, and decentralized finance. Its Ethereum Virtual Machine compatibility lets developers deploy Solidity smart contracts and work with familiar tools such as Hardhat, Foundry, ethers, and viem. Parallel execution allows independent transactions to run at the same time, helping applications handle more activity.

Developers can test contracts on Sei Testnet before deploying them to the live mainnet, then connect applications through public RPC endpoints or infrastructure providers. The ecosystem includes wallets, block explorers, indexers, and oracle integrations. Users can explore applications through the Sei dashboard and ecosystem directory, while builders use the documentation to develop contracts, connect frontends, and integrate onchain data.

## Listing details

- Canonical BetaNeon page: https://betaneon.com/products/sei
- Official website: https://www.sei.io/
- Category: Developer tools / Blockchain development
- Status: Launched
- Topics: Blockchain, Decentralized finance, Infrastructure, Trading platform, Web3
- Listing updated: 2026-10-30T16:53:28.341Z
- Information source: https://www.sei.io/

This is a product introduction, not an endorsement. Confirm current availability, features, and prices on the official website. Community upvotes on BetaNeon are not star ratings.