Smart contract auditors and developers

Audit firms and development studios, filterable by blockchain and service. Each listing states where its information comes from.

20 vendors

Listings marked "Public information" were compiled from the companies' public pages and have not been reviewed by them. They are not partners of smart-contract.com and have not been vetted yet. Verified vendors went through our vetting process.

BootNode
Public information
Web3 development consultancy building smart contracts, dApps and infrastructure for Ethereum teams
- Development
Ethereum · Optimism · ZKsync
ChainSafe
Public information
Open-source blockchain R&D firm offering protocol engineering, infrastructure and co-development
- Development
Ethereum · Polkadot · Optimism
Coinspect
Public information
Web3 security firm: smart contract, L1/L2 protocol and source code audits, penetration testing
- Audit
- Penetration testing
Ethereum · BNB Chain · Polygon · Optimism · ZKsync · +2 more
Cyfrin
Public information
Smart contract audits, penetration testing and security education, maker of Aderyn and Solodit
- Audit
- Penetration testing
Ethereum · ZKsync · Arbitrum · Avalanche · BNB Chain · +8 more
Labrys
Public informationAustralia
Brisbane product studio building smart contracts, DeFi protocols and full Web3 products
- Development
Ethereum · Base · Arbitrum · Optimism · Polygon · +1 more
Lampros Tech
Public informationIndia
Ahmedabad engineering firm building Ethereum and Layer 2 smart contracts, dApps and DAO tooling
- Development
Ethereum · Arbitrum · Optimism · Base
Macro
Public information
Boutique firm auditing smart contracts and Solana programs, with protocol development
- Audit
- Development
Ethereum · Solana · Optimism · Arbitrum · Base
Omniscia
Public informationBulgaria
Blockchain security firm auditing Solidity smart contracts, with web-based public reports
- Audit
Ethereum · Polygon · Arbitrum · Base · BNB Chain · +3 more
OpenZeppelin
Public informationUnited Kingdom
Smart contract security audits and the open-source OpenZeppelin Contracts library
- Audit
Ethereum · Arbitrum · Optimism · Base · ZKsync · +2 more
Pashov Audit Group
Public information
Remote team of security researchers auditing EVM, Solana and Move smart contracts
- Audit
Ethereum · Solana · Arbitrum · Optimism · Base · +3 more
QuillAudits
Public information
Smart contract audit firm also offering dApp penetration testing, wallet audits and monitoring
- Audit
- Penetration testing
Ethereum · NEAR · BNB Chain · Polygon · Optimism · +8 more
Rather Labs
Public informationUnited States
Web3 and AI engineering firm with a Buenos Aires team, building and auditing smart contracts
- Development
- Audit
Ethereum · Arbitrum · Base · Optimism · Polygon · +5 more
RedDuck
Public informationUkraine
Web3 engineering partner writing audit-ready smart contracts on EVM chains, Solana and Bitcoin
- Development
Ethereum · Polygon · BNB Chain · Arbitrum · Base · +6 more
softstack
Public informationGermany
Flensburg Web3 company offering smart contract audits, pentests, development and compliance
- Development
- Audit
- Penetration testing
Ethereum · Arbitrum · Optimism · Base · Polygon · +8 more
Solidity Labs
Public information
Security-first smart contract engineering team that embeds with DeFi and onchain product teams
- Development
Ethereum · Base · Optimism
Three Sigma
Public information
Code security audits and economic audits for Web3 protocols, in Solidity, Rust and Move
- Audit
Ethereum · Arbitrum · Polygon · Base · Optimism · +4 more
Trail of Bits
Public informationUnited States
Security firm reviewing smart contracts, nodes and bridges, maker of Slither and Echidna
- Audit
- Penetration testing
Ethereum · Arbitrum · Optimism · Solana · Sui · +4 more
Veridise
Public information
Smart contract and zero-knowledge audits backed by formal methods and in-house tools
- Audit
Ethereum · Arbitrum · Optimism · Base · Polygon
Zealynx
Public informationPoland
Polish security firm offering smart contract audits, dApp pentesting and AI security reviews
- Audit
- Penetration testing
- Development
Ethereum · Arbitrum · Polygon · BNB Chain · Base · +4 more
Zokyo
Public informationUnited Arab Emirates
Smart contract and protocol audits, pentesting, compliance and product development, Dubai
- Audit
- Penetration testing
- Development
Ethereum · Solana · Polygon · Arbitrum · Optimism · +9 more

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