Freelance/Marketplace
| Name | Website | Description |
| Code Arena | code4rena.com | Auditors compete to keep high severity bugs out of production. |
| Sherlock | sherlock.xyz | Combining standard & competition based audits. |
| Finaudit | findaudit.xyz | Smart contract audit telegram linking projects with auditors. |
Traditional
| Name | Website | Description |
| Consensys Diligence | consensys.io | One of the longest running and most reputable smart contract audit shops connected with Ethereum founders. |
| OpenZeppelin | openzeppelin.com | These experts in auditing have also built foundational standards and security frameworks for web3 code. |
| Ackee Blockchain Security | ackeeblockchain.com | Czech Republic-based audit shop with considerable track record. Should offer better rates but still very high quality audits compared to Consensys or OpenZeppelin. Past clients include 1inch, Trezor and Layer Zero. |