
Sei
Sei is a parallelized EVM layer-1 optimized for high-frequency trading apps.

What is Sei?
Sei is a layer-1 built around parallel transaction execution and an order-matching engine at the chain level, geared toward trading-heavy applications. Developers ship EVM contracts and tap native orderbook infrastructure, while users swap on DragonSwap, lend on Yei Finance, and explore activity through Seitrace. Block times sit around 400ms.
Web3 dapps and developer tools related to Sei
Discover blockchain applications that are frequently used with Sei.
Developer resources from Alchemy

What is Arc? The economic OS for the internet, explained for developers
Arc is Circle's open, EVM-compatible Layer-1 for stablecoin finance. This guide covers USDC gas, deterministic finality, and what can break when you port a contract.

Advancing into the onchain consensus layer with Alchemy Validators
Announcing Alchemy Validators, the newest addition to our comprehensive web3 infrastructure suite

How Goldsky kept transactions flowing with zero downtime
Goldsky migrated its Compose bundler and paymaster to Alchemy and built a provider abstraction layer that makes failover a single environment variable change—no code deploy, no downtime.
Sei alternatives
Explore web3 competitors and apps like Sei.
App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

