An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu

Lightweight Java and Android library for integration with Ethereum clients

The library for web and native user interfaces.

Ergonomic and modular web framework built with Tokio, Tower, and Hyper

OpenZeppelin Contracts is a library for secure smart contract development.

🦄 🦄 🦄 🦄 Core smart contracts of Uniswap v4