freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

A modular SQL linter and auto-formatter with support for multiple dialects and templated code.

Diff your Github against Etherscan.

Guidelines and training material to write secure smart contracts

Publications from Trail of Bits

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

A Prettier plugin for automatically formatting your Solidity code.

OpenZeppelin Contracts is a library for secure smart contract development.

Performant financial charts built with HTML5 canvas

Bitcoin Core integration/staging tree

State-of-the-art, highly opinionated, hyper-optimised, and secure 🐍Vyper smart contract building blocks.

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

A complete AI agency at your fingertips - From frontend wizards to Reddit community ninjas, from whimsy injectors to reality checkers. Each agent is a specialized expert with personality, processes…

Reproduce DeFi hacked incidents using Foundry.

Uniswap's Universal Router for NFT and ERC20 swapping

Source for remoteintech.company — a community-maintained directory of remote-friendly tech companies

Mastering Ethereum: 2nd Edition, by Andreas M. Antonopoulos, Gavin Wood, Carlo Parisi, Alessandro Mazza, Niccolò Pozzolini

Here we discuss how one can investigate crypto hacks and security incidents, and collect all the possible tools and manuals! PRs are welcome! If any tool is missing - please open PR!

A collective list of free APIs

Personal portfolio of audits that I have participated in.

Web3 Security For The Few Who Demand Perfection

A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic

⚡ Dynamically generated, customizable SVG that gives the appearance of typing and deleting text for use on your profile page, repositories, or website.

Lesson content for cryptozombies.io

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

A collection of smart contract vulnerabilities along with prevention methods