Modern, opinionated, and gas optimized building blocks for smart contract development.

Optimized Solidity snippets.

🚀 Try the Learn EVM Explorer we just launched!!!

Demystifying Exploitable Bugs in Smart Contracts

Best resources for Solidity gas optimizations ⛽

Simple, intentionally-limited versions of web3 protocols & apps.

A summary and solutions for 200+ CTF blockchain challenges

A book on all things Foundry, available at https://book.getfoundry.sh.

Implementation of a co-joined ERC20 and ERC721 pair.

Factory smart contract to make easier and safer usage of the `CREATE` and `CREATE2` EVM opcodes as well as of `CREATE3`-based (i.e. without an initcode factor) contract creations.

Merkle Proof Generator and Validator in Solidity

A library of modern, hyper-optimized, and extensible Huff contracts with extensive testing and documentation built by Huff maintainers.

Hardhat plugin to deploy your smart contracts across multiple EVM chains with the same deterministic address.

🦄 Gasless ERC20 swap settlement protocol 🦄

An experimental decentralized art factory by Justin Roiland and Paradigm.

⏳ Smart contracts of the Sablier Lockup protocol

Variable Rate Gradual Dutch Auctions.

Efficient multicaller contracts

Development framework for Foundry projects

A Foundry Library for compiling, debugging, and working with Huff contracts in Solidity.

Protocol Development & Upgradability Framework

An reference implementation of Gradual Dutch Auctions. GDAs enable the efficient sale of assets that do not have liquid markets.

A comparison of solidity fuzzing tools Foundry, Echidna & Medusa

Allows to easily create tx to be signed through CLI and submitted on a Safe

Helper smart contracts to deploy and manage upgradeable contracts on Ethereum.

Autocompounder contracts written in Solidity

Simulate cross-chain protocols txs, easily.