Smart contract auditors and developers

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

22 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.

4soft
Public informationPoland
Wrocław software house for blockchain development, on-chain analytics and crypto compliance
- Development
- Audit
Ethereum · Arbitrum · Base · Polygon · BNB Chain · +4 more
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
BlockSec
Public information
Web3 security company offering smart contract and infrastructure audits plus threat monitoring
- Audit
Ethereum · Arbitrum · BNB Chain · Sui
CertiK
Public informationUnited States
Web3 security firm offering manual smart contract audits, formal verification and pentests
- Audit
- Penetration testing
Ethereum · BNB Chain · Polygon · TON · Cosmos
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
Composable Security
Public informationPoland
Kraków firm auditing EVM smart contracts, off-chain components and AI integrations
- Audit
Ethereum · Base · BNB Chain
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
INC4
Public informationUkraine
Kyiv engineering studio whose Blockchain Hub builds L1s, DeFi protocols and smart contracts
- Development
- Audit
Ethereum · Base · Arbitrum · BNB Chain · Polygon · +1 more
Metlabs
Public informationSpain
Spanish blockchain-only development company focused on RWA tokenization and smart contracts
- Development
- Audit
Ethereum · Polygon · BNB Chain · Arbitrum · Solana
Omniscia
Public informationBulgaria
Blockchain security firm auditing Solidity smart contracts, with web-based public reports
- Audit
Ethereum · Polygon · Arbitrum · Base · BNB Chain · +3 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
Quantstamp
Public information
Web3 security firm offering smart contract audits, economic analysis and infrastructure tests
- Audit
- Penetration testing
Ethereum · Solana · Polygon · TON · Avalanche · +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
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
Rumble Fish
Public informationPoland
Kraków software house with a blockchain practice: smart contracts, DeFi, dApps, bridges
- Development
Ethereum · Solana · Polygon · BNB Chain · Avalanche
Salus
Public information
Web3 security firm offering smart contract audits, penetration testing and zero-knowledge services
- Audit
- Penetration testing
Ethereum · BNB Chain · Polygon · Arbitrum · Avalanche
ScaleBit
Public information
Web3 security team auditing smart contracts, dApps and blockchains, with a Bitcoin layer 2 focus
- Audit
Ethereum · Arbitrum · BNB Chain · Solana · Polygon · +3 more
Shieldify
Public informationBulgaria
Bulgarian Web3 security company offering smart contract audits by review or by subscription
- Audit
- Penetration testing
- Development
Ethereum · Solana · ZKsync · Avalanche · BNB Chain · +1 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
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
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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