Cyberscope is one of the leading auditing firms, having audited more than 1,700+ blockchain projects and NFTs and KYC’d more than 600 teams so far.

Cyfrin is smart contract auditing company focused on scaling all of web3 security. 

CyStack is a cybersecurity company in Vietnam. They have provide security audit for Cellframe quantum-resistant layer-1 network and many other smart contracts. 

Decenter is a team of experienced blockchain developers with a proven track record in building complex Ethereum-based DApps, such as MelonMail, Cryptographics, Cryptage, and Etherships. Their smart contract audits service provides you with an in-depth analysis of every aspect of a smart contract, including security testing, business logic review and gas usage optimization, all done through meticulous manual code review based on the latest best practices in the blockchain industry.

Decurity claims to be a Tier-1 smart contract security auditing firm scored highest among all the security auditing firms in Paradigm CTF and OpenZeppelin CTF.

EtherAuthority aims to be a top-notch smart contract development and security service provider. The company is of Indian origin serving since 2018.

Experfy provides comprehensive and standardized audits of smart contracts through rigorous independent reviews. First, the smart contract is verified against our library of known issues that we have seen come up in dozens of reviews. Second, Experfy validate that your contract is performing the logic it was intended to and there are no security issues. 

Flexe.io is a full-cycle Web3 marketing and PR agency that has supported over 600 clients across the crypto industry.

FreshCoins claims to be the place to find the next big cryptocoin

Save time, save steps, infinite DeFi combinations. Build your own DeFi legos into one transaction without knowing how to code.

As a non-traditional boutique growth agency, GuerrillaBuzz has been disrupting the blockchain marketing and PR landscape since 2018.

Hackdra cybersecurity experts conduct free penetration tests to analyze the functionality of smart contracts and identify security vulnerabilities. Additionally, they perform all necessary audits to ensure network security, server security, email security, and communication security.

Hacken team analyses the smart contract’s functionality and performs all necessary checks against known vulnerabilities. Basic security audit includes manual codebase audit by Hacken consultants and automated tools security audit.

HAECHI LABS is a blockchain technology company with its own tech solutions and R&D center. Currently, HAECHI LABS partners with top global crypto exchanges such as Bit-Z, CPDAX, KuCoin, Liquid by providing the best quality smart contract security audit service and develops blockchain services with large enterprises including Kakao's blockchain subsidiary(Ground X) and SK telecom. Key solutions are 'VVISP', the open-source smart contract development/deploy/test tool and 'Query Layer', the middleware solution that supports communication/visualization of blockchain data.

Halborn is a prominent cybersecurity firm in the blockchain space, known for its robustness. Their services include smart contract assessment, web and mobile penetration testing, L1 assessment, cloud security, DevOps, and more.

HashEx is one of the most impactful tech advisories in the DeFi industry. Experienced team of auditors and developers, analysts, and consultants, they help their customers navigate DeFi markets.

Hashlock is Australia's leading independent blockchain cybersecurity and smart contract auditing firm. They are a highly specialised Blockchain Cybersecurity firm coming from manual analysis, community auditing backgrounds and differentiate by the quantity of findings and being maintaining a high level of collaboration with clients, both in Australia and globally.

Hexens is a cybersecurity provider with an essential focus on blockchain and novel technologies.

Hexlant Develops Blockchain Technology. Hexlant Provides Software for Easy Blockchain Implementation, Technology for Smart Contract Audit, and the Safest Custody Solution. 

HYDN provides comprehensive smart contract security audits and tokenomics consultancy from a team of experienced blockchain and cybersecurity professionals.

To help you avoid common pitfalls the Top ICO List analysts have constructed a proven process for in-depth auditing your ICO to point out areas that need improvement.

A team of India based security professionals who are skilled in their niche. Although a start-up, you’ll never have to compromise with anything from us. We strive to push forward and provide overall surveillance and quality service to our customers.

Immune is the first bug bounty platform focused on smart contract security. Review code. Prevent hacks. Build a rep. Get paid.

Inspex is formed by a team of cybersecurity experts highly experienced in various fields of cybersecurity. We provide blockchain and smart contract professional services at the highest quality to enhance the security of our clients and the overall blockchain ecosystem.

InterFi provides an extensive smart contract audit (25 pages+ thorough static, manual, and automated AI analysis). They are a blockchain security company from Calgary, Canada.