# Best Smart Contract Audit Services

## How Many Smart Contract Audit Services Products Does G2 Track?

**Total Products under this Category:** 39

### Category Stats (Jul 2026)

- **Average Rating:** 4.69/5 (↓0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings

_Last updated: July 31, 2026_

## How Does G2 Rank Smart Contract Audit Services Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 0+ Authentic Reviews
- 39+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

### [HackenProof](https://www.g2.com/products/hackenproof/reviews)

HackenProof is an expert bug bounty and crowdsourced audit platform that connects companies with a global community of white hat security researchers. Projects launch a program, researchers find and report vulnerabilities, and HackenProof handles triage, validation, and payouts, so security teams only deal with verified, actionable issues.

**Average Rating:** 4.8/5.0

**Total Reviews:** 9

#### Who Is the Company Behind HackenProof?

- **Seller:** [HackenProof](https://www.g2.com/sellers/hackenproof)
- **Year Founded:** 2017
- **HQ Location:** Tallinn, EE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8cdd09ab2c7d88c5a6bb8965c2a2b5d92185462c0f90963d21970571ef239bba&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fhackenproof%2F&secure%5Burl_type%5D=linkedin_company_website)  
105 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 50% Medium, 40% Small

#### What Are Recent G2 Reviews of HackenProof?

**["HackenProof Keeps Our Bug Bounty Process Organized and Manageable"](https://www.g2.com/survey_responses/hackenproof-review-12976222)**

**Rating:** 5.0/5.0 stars

_— Nikita I._

[Read full review](https://www.g2.com/survey_responses/hackenproof-review-12976222)

**["Professional and Responsive Partner for Web2 & Web3 Bug Bounty Programs"](https://www.g2.com/survey_responses/hackenproof-review-13116967)**

**Rating:** 4.5/5.0 stars

_— Verified User in Financial Services_

[Read full review](https://www.g2.com/survey_responses/hackenproof-review-13116967)

### [Softstack](https://www.g2.com/products/softstack/reviews)

Softstack is an Industry Leader in Web3 custom software development, smart contract auditing, and Web3 consulting. Made in Germany. Softstack has a zero exploit record on 1,200+ smart contract audits. Trusted by global brands such as Ripple, TON, BitGo, Anchorage Digital, Siemens AG, 1inch and many more.

**Average Rating:** 5.0/5.0

**Total Reviews:** 6

#### Who Is the Company Behind Softstack?

- **Seller:** [softstack GmbH](https://www.g2.com/sellers/softstack-gmbh)
- **Year Founded:** 2017
- **HQ Location:** Flensburg, DE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=19775d9eaec176206ddbc14a1c9bc488ef131445a3d0b082bd0459f074a81338&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsoftstack&secure%5Burl_type%5D=linkedin_company_website)  
11 employees on LinkedIn®

#### What Are Recent G2 Reviews of Softstack?

**["Exceptional Security with Rapid Onboarding"](https://www.g2.com/survey_responses/softstack-review-12347656)**

**Rating:** 5.0/5.0 stars

_— Ryan G._

[Read full review](https://www.g2.com/survey_responses/softstack-review-12347656)

**["Seamless Agile Support for Blockchain Projects"](https://www.g2.com/survey_responses/softstack-review-12291327)**

**Rating:** 5.0/5.0 stars

_— Madison T._

[Read full review](https://www.g2.com/survey_responses/softstack-review-12291327)

### [Hashlock](https://www.g2.com/products/hashlock/reviews)

Hashlock is the industry leading independent blockchain cybersecurity and smart contract auditing firm for web3. 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. Reach out to request a smart contract security audit by our leading security researchers, conducted through manual analysis and best practice testing.

**Average Rating:** 5.0/5.0

**Total Reviews:** 5

#### Who Is the Company Behind Hashlock?

- **Seller:** [Hashlock](https://www.g2.com/sellers/hashlock)
- **Year Founded:** 2022
- **HQ Location:** Sydney, AU
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=a3d878b03caac95b999e1ce4268270414078ec46c3b465bc950e21d7a3ac73c9&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fhashlock%2F&secure%5Burl_type%5D=linkedin_company_website)  
21 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 80% Small

#### What Are Recent G2 Reviews of Hashlock?

**["World-Class Security Audits with Unmatched Speed"](https://www.g2.com/survey_responses/hashlock-review-12951672)**

**Rating:** 5.0/5.0 stars

_— Jacob K._

[Read full review](https://www.g2.com/survey_responses/hashlock-review-12951672)

**["Trusted security partner for our Web3 launch"](https://www.g2.com/survey_responses/hashlock-review-12928880)**

**Rating:** 5.0/5.0 stars

_— Gor K._

[Read full review](https://www.g2.com/survey_responses/hashlock-review-12928880)

### [Antier Solutions](https://www.g2.com/products/antier-solutions/reviews)

Antier Solutions is a blockchain development company providing a host of offerings like white label crypto exchange and wallet development, P2P lending platform development, ICO/STO/IDO, coin development, crypto banking platform development, DeFi development, NFT development, metaverse development, DAO development.

**Average Rating:** 4.4/5.0

**Total Reviews:** 4

#### Who Is the Company Behind Antier Solutions?

- **Seller:** [Antier Solutions](https://www.g2.com/sellers/antier-solutions)
- **Year Founded:** 2005
- **HQ Location:** Sahibzada Ajit Singh Nagar, Punjab, India
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ed8a74af4948e60ab74256ca3ca4c7bfc8f4b17e085bcd1dc237eb152169d17e&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fantiersolutions%2F&secure%5Burl_type%5D=linkedin_company_website)  
759 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 50% Medium, 25% Large

#### What Are Recent G2 Reviews of Antier Solutions?

**["Crypto exchange is my fav work to do"](https://www.g2.com/survey_responses/antier-solutions-review-7196361)**

**Rating:** 4.5/5.0 stars

_— Gaurav D._

[Read full review](https://www.g2.com/survey_responses/antier-solutions-review-7196361)

**["Top-notch White Label Cryptocurrency Exchange Development Company"](https://www.g2.com/survey_responses/antier-solutions-review-8224488)**

**Rating:** 5.0/5.0 stars

_— Bharti V._

[Read full review](https://www.g2.com/survey_responses/antier-solutions-review-8224488)

### [BlockChainSentry](https://www.g2.com/products/blockchainsentry/reviews)

BlockChainSentry offers end-to-end custom, scalable, Web-3-based blockchain security solutions, including vulnerability management, smart contract audits, compliance audits, penetration testing, threat intelligence, and test automation.

**Average Rating:** 4.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind BlockChainSentry?

- **Seller:** [BlockChainSentry](https://www.g2.com/sellers/blockchainsentry)
- **Year Founded:** 2021
- **HQ Location:** Concord, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=22b43efeb4ca7ffdf38222fe07bb36b0cfafe509341a0d9e40f2d261ae2d9c22&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fblockchainsentry&secure%5Burl_type%5D=linkedin_company_website)  
4 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

#### What Are Recent G2 Reviews of BlockChainSentry?

**["Reliable"](https://www.g2.com/survey_responses/blockchainsentry-review-7467583)**

**Rating:** 4.0/5.0 stars

_— Boston T._

[Read full review](https://www.g2.com/survey_responses/blockchainsentry-review-7467583)

### [OpenZeppelin](https://www.g2.com/products/openzeppelin/reviews)

OpenZeppelin Contracts helps you minimize risk by using battle-tested libraries of smart contracts for Ethereum and other blockchains. It includes the most used implementations of ERC standards.

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind OpenZeppelin?

- **Seller:** [OpenZeppelin](https://www.g2.com/sellers/openzeppelin)
- **Year Founded:** 2015
- **HQ Location:** Distributed organization, OO
- **Twitter:** @OpenZeppelin  
59,119 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=039317e26dc305b142e672db3ea56f279e0ea06bd9814a4c4b60d07d96ecf63b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F6624089&secure%5Burl_type%5D=linkedin_company_website)  
122 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

#### What Are Recent G2 Reviews of OpenZeppelin?

**["OpenZeppelin: A free and open-source library for creating smart contracts"](https://www.g2.com/survey_responses/openzeppelin-review-6932111)**

**Rating:** 5.0/5.0 stars

_— Nirmit S._

[Read full review](https://www.g2.com/survey_responses/openzeppelin-review-6932111)

### [Ambisafe Smart Contract Audit](https://www.g2.com/products/ambisafe-smart-contract-audit/reviews)

Ambisafe smart contract reviews help to ensure the stability of your project. It is important to identify problems before deploying your code. Do not underestimate how crucial this is. Once your code is on the main network, you can not modify it. Luckily, our Solidity team excels at finding and fixing Smart Contract issues. Our team’s lead-software architect Oleksii Matiiasevych, helped to save millions of dollars from hackers in July 2017. There is no team better qualified to review your smart contracts. Avoid errors that could risk your project and company. Demonstrate your commitment to security and quality with our smart contract review and stamp of approval.

#### Who Is the Company Behind Ambisafe Smart Contract Audit?

- **Seller:** [Ambisafe](https://www.g2.com/sellers/ambisafe)
- **Year Founded:** 2015
- **HQ Location:** San Francisco, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6db341c17da3b565aa30fb70f954bc6a42c997aa0492c9af2dab51c122a36591&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fambisafe%2F&secure%5Burl_type%5D=linkedin_company_website)  
19 employees on LinkedIn®

### [AnChain.AI](https://www.g2.com/products/anchain-ai/reviews)

Leading AI blockchain #security company identifying and solving vulnerabilities for exchanges, wallets, blockchain protocols and DApps.

#### Who Is the Company Behind AnChain.AI?

- **Seller:** [AnChain.AI](https://www.g2.com/sellers/anchain-ai)
- **Year Founded:** 2018
- **HQ Location:** San Jose, US
- **Twitter:** @AnChainAI  
6,464 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=43038bce89fbc7dbbc4588598da3e80a7721b3842d9cc8d360b14b08a41aebf8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fanchainai%2F&secure%5Burl_type%5D=linkedin_company_website)  
20 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Medium

#### What Are Recent G2 Reviews of AnChain.AI?

**["The digital asset analyser"](https://www.g2.com/survey_responses/anchain-ai-review-7812778)**

**Rating:** 4.5/5.0 stars

_— Verified User in Information Technology and Services_

[Read full review](https://www.g2.com/survey_responses/anchain-ai-review-7812778)

### [Axomium](https://www.g2.com/products/axomium/reviews)

We are a software development company that specializes in Decentralized Technology and Web3 Development. Our team of highly skilled professionals can provide top-notch web3 expertise to augment your projects or team. With our extensive experience, we are capable of developing your Minimum Viable Product (MVP) in the shortest time possible, ensuring rapid and efficient delivery. Partner with us to leverage our expertise and achieve your business goals in the decentralized technology space.

#### Who Is the Company Behind Axomium?

- **Seller:** [Axomium](https://www.g2.com/sellers/axomium)
- **Year Founded:** 2023
- **HQ Location:** Dubai, AE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=204cc039e45e131351990209a95e08cb99872c07155cf14c0d1d92d0601c79ca&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Faxomium-labs%2F&secure%5Burl_type%5D=linkedin_company_website)  
5 employees on LinkedIn®

### [byterocket](https://www.g2.com/products/byterocket/reviews)

Ready for Lift-Off? Expert software development and professional smart contract audits by experienced engineers, turning your problems into solutions.

#### Who Is the Company Behind byterocket?

- **Seller:** [byterocket](https://www.g2.com/sellers/byterocket)
- **Year Founded:** 2020
- **HQ Location:** Flensburg, DE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=811c990d03b6b38813f0edf21c16a9906151d152a5fa80db918d48a036b0d6a5&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F70431135&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

### [CertiK](https://www.g2.com/products/certik/reviews)

A comprehensive security assessment of your smart contract and blockchain code to identify vulnerabilities and recommend ways to fix them.

#### Who Is the Company Behind CertiK?

- **Seller:** [CertiK](https://www.g2.com/sellers/certik)
- **Year Founded:** 2018
- **HQ Location:** New York, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=cb56920f0384526861199e943975a59053fbc593aea722cdd535343c69721864&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcertik&secure%5Burl_type%5D=linkedin_company_website)  
188 employees on LinkedIn®

### [Certora](https://www.g2.com/products/certora/reviews)

Certora is a leading Web3 security company specializing in formal verification tools and smart contract audits. Their flagship product, the Certora Prover, enables developers to mathematically verify the correctness and security of smart contracts by analyzing bytecode against specified rules. This process ensures that contracts function as intended and are free from critical vulnerabilities. Key Features and Functionality: - Formal Verification: Certora Prover performs comprehensive analysis of smart contract bytecode, checking all possible states and paths to identify potential vulnerabilities. - Automated Analysis: The tool integrates seamlessly into development pipelines, allowing for continuous security checks on every code commit. - Custom Rule Development: Certora's team of formal verification experts can create tailored rules to ensure the security of specific contract functionalities. - Community Engagement: Through audit contests and collaborations with platforms like Code4rena, Certora leverages community expertise to enhance smart contract security. Primary Value and Problem Solved: Certora addresses the critical need for secure and reliable smart contracts in the decentralized finance (DeFi ecosystem. By providing tools that mathematically prove contract correctness, Certora helps developers detect and eliminate bugs before deployment, reducing the risk of exploits and financial losses. This proactive approach to security fosters trust and confidence among users and stakeholders in the blockchain community.

#### Who Is the Company Behind Certora?

- **Seller:** [Certora](https://www.g2.com/sellers/certora)
- **Year Founded:** 2018
- **HQ Location:** Tel Aviv, IL
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c492619a0107059ca9fdd5f88a90e90d3185eba2be58ebe8f81d0fbe6e06779e&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcertora%2F&secure%5Burl_type%5D=linkedin_company_website)  
80 employees on LinkedIn®

### [ChainSecurity](https://www.g2.com/products/chainsecurity/reviews)

ChainSecurity is a provider of smart contract auditing services, specializing in the security assessment of complex blockchain projects. Since its inception in 2017, the company has collaborated with top-tier DeFi protocols, research institutions, central banks, and large organizations to ensure the integrity and reliability of their smart contracts. By leveraging advanced tools and methodologies, ChainSecurity delivers comprehensive audit reports that detail system descriptions and identify potential vulnerabilities, thereby enhancing the overall security posture of blockchain applications. Key Features and Functionality: - Comprehensive Audits: ChainSecurity conducts in-depth analyses of smart contracts, examining code for security flaws, functional correctness, and adherence to best practices. - Advanced Tooling: Utilizing state-of-the-art tools like Securify, developed in collaboration with ETH Zurich, ChainSecurity offers automated and manual reviews to uncover vulnerabilities. - Diverse Expertise: The company has audited a wide range of projects across various sectors, including DeFi protocols, stablecoins, lending platforms, and decentralized exchanges. - Public Audit Reports: ChainSecurity provides transparent and detailed audit reports, allowing stakeholders to understand the security measures and findings related to their projects. Primary Value and Problem Solved: ChainSecurity addresses the critical need for security in the blockchain ecosystem by identifying and mitigating vulnerabilities within smart contracts. By offering thorough and transparent audits, the company helps organizations build trust with their users, prevent potential exploits, and ensure the safe operation of their blockchain applications. This proactive approach to security fosters a more robust and reliable decentralized financial landscape.

#### Who Is the Company Behind ChainSecurity?

- **Seller:** [Decentralized Security AG](https://www.g2.com/sellers/decentralized-security-ag)
- **Year Founded:** 2017
- **HQ Location:** Zürich, CH
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=98ff8dbbe3aa5856b01b3f9019361d2b9952b0a53f5554b8ddf12daa2256497d&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fchainsecurity&secure%5Burl_type%5D=linkedin_company_website)  
26 employees on LinkedIn®

### [CodeHawks](https://www.g2.com/products/codehawks/reviews)

CodeHawks helps protect some of the world's largest protocols. It offers private and public smart contract auditing competitions, supported by a global community of industry-leading security researchers.

#### Who Is the Company Behind CodeHawks?

- **Seller:** [Cyfrin](https://www.g2.com/sellers/cyfrin)
- **Year Founded:** 2023
- **HQ Location:** Boston, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=f192837d51561ac640ebb391c3bdce924a67446f7675bfe1b7fd8a97d3387528&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcyfrin%2F&secure%5Burl_type%5D=linkedin_company_website)  
20 employees on LinkedIn®

### [Codezeros](https://www.g2.com/products/codezeros/reviews)

Codezeros is a top Blockchain solution and service provider company that reinvents business with Blockchain solutions. Our Blockchain development solutions fortify the business network and make it technically dominant and advanced. Our Blockchain services include Blockchain Development, Oracle Development, VRF Protocol Development, ZK-Rollups Development, Optimistic Rollups Development Launchpad Development, Wallet Development, NFT Development, DAO Blockchain, dApps Development, Modern Whitepaper Solutions, Consensus Forking, Smart Contract Audit, New DLT Solutions, STO Solutions, Tokenomics & Exchange Development,. We serve globally and build innovative and secure digital transformation strategies to meet our client’s business needs. Codezeros is a top Blockchain consultancy firm which develops Blockchain apps. Blockchain technology can be applied to various sectors like in banking, finance, healthcare, insurance, supply chain, enterprise, identity infrastructures, politics, election, voting and in cryptocurrency. Our blockchain web and mobile apps are scalable, secure and trustworthy.

#### Who Is the Company Behind Codezeros?

- **Seller:** [Codezeros](https://www.g2.com/sellers/codezeros)
- **Year Founded:** 2015
- **HQ Location:** Ahmedabad, IN
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=e0c435613cf642eeb5f7d282df1c4d1ac0c570f54b249b81206e97fa0f2292df&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcodezeros%2F&secure%5Burl_type%5D=linkedin_company_website)  
101 employees on LinkedIn®

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 ![Lauren Worth](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lauren Worth")
LW

Researched and written by [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)

Updated October 3, 2024

Smart contract audit service providers help businesses by assessing the security and reliability of [smart contracts](https://www.g2.com/categories/smart-contracts). This cybersecurity service reviews the smart contract code to identify potential vulnerabilities and security risks. They help ensure that the smart contract will perform as intended and cannot be exploited by attackers to steal funds or disrupt the operation of the blockchain network.

Smart contract security auditing is a crucial activity that ensures the reliability and integrity of smart contracts. By ensuring that security risks are identified and addressed, smart contract audit service providers can help prevent financial losses and protect the interests of all the parties involved in the transaction. [Cybersecurity consulting providers](https://www.g2.com/categories/cybersecurity-consulting) also often provide smart contract auditing services.

To qualify for inclusion in the Smart Contract Audit category, a service provider must:

- Identify and mitigate any potential vulnerabilities or security risks in smart contracts
- Perform manual and automated reviews of smart contract code to identify inefficient code and poor coding practices
- Review the smart contract’s architecture and design and provide recommendations

Show More