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

A compilation of patterns and best practices for the smart contract programming language Solidity

Optimized Solidity snippets.

Guidelines and training material to write secure smart contracts

Demystifying Exploitable Bugs in Smart Contracts

weird erc20 tokens

Solidity library for advanced fixed-point math

Semgrep rules for smart contracts based on DeFi exploits

Algorithms and data structures implemented in Solidity

A collection of Solidity security exercises and puzzles to test your knowledge of Solidity's more esoteric features. Some are easy, and some are exceptionally challenging.

A comparison of solidity fuzzing tools Foundry, Echidna & Medusa

A 6-part series on how to use Echidna on real-world codebases

A tool to automatically generate Foundry unit test cases from Echidna and Medusa failed properties

Simple Tutorial for Web3 Security

Python3 script to automatically create a Gas-Optimizations report for smart-contract audits