Ethereum smart contracts can be fuzzed with Echidna, whose repository describes it as a fuzzer.
OpenZeppelin vs Ethernaut
How do OpenZeppelin and Ethernaut compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | OpenZeppelin | Ethernaut |
|---|---|---|
| What it is | OpenZeppelin Contracts provides a library for secure smart contract development. | Each Ethernaut level requires hacking a smart contract in the Ethereum Virtual Machine through a Web3 and Solidity wargame. |
| Website | ||
| Type | Open-source project | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Not recorded | Web |
| Open source | Yes | Not stated |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both OpenZeppelin and Ethernaut.
Sherlock offers Web3 security audits, contests, AI analysis, and bug bounties for smart contract projects.
Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.
Immunefi connects crypto projects with security researchers through smart contract and crypto bug bounty programs.
Anvil runs a local Ethereum node for development and testing, with in-memory execution, funded accounts, instant mining, and chain forking.
Hexens audits blockchain systems and offers continuous threat exposure monitoring, alongside research on smart contract platform vulnerabilities.







