Smart contract auditors and developers

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

16 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.

Adevar Labs
Public informationUnited States
Blockchain security firm offering audits, fuzzing, formal verification and penetration testing
- Audit
- Penetration testing
Solana · Ethereum · Sui · Aptos · BNB Chain
ChainSecurity
Public informationSwitzerland
Zurich smart contract audit firm reviewing DeFi, stablecoin, bridge and L1/L2 code
- Audit
Ethereum · Solana · Starknet · Sui · Aptos
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
FuzzingLabs
Public informationFrance
French offensive security company auditing blockchains and smart contracts with fuzzing
- Audit
Solana · Ethereum · NEAR · Starknet · Sui · +3 more
Hexens
Public informationUnited Kingdom
Offensive security firm auditing smart contracts, L1/L2 protocols, ZK and cryptography
- Audit
- Penetration testing
Ethereum · Polygon · ZKsync · Aptos
MoveBit
Public information
Security team dedicated to the Move ecosystem, auditing contracts, dApps and blockchains
- Audit
Sui · Aptos · Polygon
Oak Security
Public informationGermany
Munich-based Web3 security firm auditing EVM, Solana, Cosmos, Substrate and Starknet code
- Audit
- Penetration testing
Ethereum · Solana · Cosmos · Polkadot · Starknet · +2 more
OtterSec
Public information
Blockchain security firm auditing layer 1s, wallets, DeFi and bridges, with pentesting and fuzzing
- Audit
- Penetration testing
Solana · Ethereum · Sui · Aptos · Cosmos · +1 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
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
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
Verichains
Public informationVietnam
Security firm auditing smart contracts, protocols and cryptography, with penetration testing
- Audit
- Penetration testing
Ethereum · BNB Chain · Solana · Avalanche · Polygon · +1 more
Zellic
Public information
Security assessments of smart contracts, ZK circuits, L1s and web applications
- Audit
- Penetration testing
Ethereum · Solana · Aptos · Sui · Cosmos
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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