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Top Smart Contract Auditors in France

Ratings Updated: April 1, 2026

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0 Leaders 8 Contenders

8 Companies

Country: France

Blockchain Focus: Smart Contract Auditing

List of the Top France Smart Contract Audit Services

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SEROKELL

4.9 33 reviews

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Verified

$10,000+

$50 - $99 / hr

50 - 249

Paris, France

Services provided

20% Blockchain

20% AI Development

10% AI Agents +5

10% AI Consulting

10% Custom Software Development

10% Generative AI

10% IoT Development

10% Web Development

Focus Areas

10% Smart Contract Auditing

20% Ethereum Development

20% Smart Contract Development +5

10% Decentralized Finance

10% Initial Coin Offering Consulting

10% Metaverse Development

10% Tokenization

10% Web3

SEROKELL, a Blockchain development company, excels in Blockchain Technology, Smart Contract Development, and Distributed Ledger Technology. Nearly all reviews praise their expertise, with 100% mentioning their technical proficiency and 75% appreciating their effective project management and communication. Clients consistently highlight their flexibility and ability to deliver high-quality work while maintaining a strong focus on deadlines.

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1 of 1 Smart Contract Auditing reviews is 5 stars

1 new review for Smart Contract Auditing in past 6 months

Unknown avg. project cost

Smart Contract Auditing Experience

SEROKELL has received overwhelmingly positive feedback for its Smart Contract Auditing services, with clients citing strong technical expertise and a proactive communication approach. Notably, 100% of reviewers expressed satisfaction with the depth of analysis and the identification of complex vulnerabilities. The project management was praised for its organization and timeliness. One client highlighted their return for a second audit due to previous success, emphasizing SEROKELL's professionalism and attention to detail, although a desire for more frequent updates was noted as an area for improvement.
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4 of 4 Blockchain reviews are 5 stars

2 new reviews for Blockchain in past 6 months

$200,000 – $999,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Smart Contract Audit for Cryptocurrency Payment Platform
5.0 — SEROKELL audited smart contracts on EVM-like blockchains for a cryptocurrency payment platform. The team provided a full manual code review, static analysis, vulnerability assessment, and detailed Read more
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Industry Experience

Serokell has demonstrated strong expertise across various industries, notably in financial services, blockchain, and technology. Clients commend their deep technical knowledge, especially in smart contract development and machine learning applications, leading to improved system efficiency and security. Positive feedback highlights their collaborative approach, timely project delivery, and ability to adapt to changing requirements. Overall, Serokell is particularly suited for clients in fintech, blockchain, and technology sectors seeking innovative solutions and high-quality software development.
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Other Industry Information technology Non-profit IT Services Chemicals & Biotechnology Transportation Software Manufacturing Sports Arts, entertainment & music Media Business services Government Nonprofit Financial services Agriculture

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Average Project Cost Breakdown

$50,000 to $199,999 (8) $200,000 to $999,999 (7) $10,000 to $49,000 (2) $1,000,000 to $9,999,999 (1) $10,000,000 + (1)

What Clients Have Said
Clients consistently praised Serokell for their good value for cost, describing them as a financially viable option for high-quality services. Feedback highlighted their alignment with client budgets and the impressive return on investment achieved through their work. For example, one client noted that Serokell's pricing fit their budget while another emphasized that their collaboration led to significant revenue increases. Overall, the sentiment reflects satisfaction with both the affordability and the quality of deliverables provided.
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Appstronaute

Not yet reviewed

$10,000+

Undisclosed

10 - 49

Marseille, France

Services provided

10% Blockchain

40% Mobile App Development

20% Custom Software Development +2

15% AI Development

15% Web Development

Focus Areas

15% Smart Contract Auditing

20% Decentralized Finance

20% Ethereum Development +3

15% Metaverse Development

15% Smart Contract Development

15% Web3

Appstronaute is a mobile application development firm. Headquartered in Marseille, France, their team focuses on Mobile App Development and Custom Software Development.
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TOZEX

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Clichy, France

Services provided

100% Blockchain

Focus Areas

25% Smart Contract Auditing

75% Tokenization

TOZEX is a Blockchain company. Founded in 2019, the team offers Blockchain. The company is located in Clichy, France.
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Agence MAP EMULSION

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Marseille, France

Services provided

20% Blockchain

20% Branding

20% Event Marketing +2

20% Market Research

20% Print Design

Focus Areas

100% Smart Contract Auditing

Agence MAP EMULSION is a branding agency established in 2007. The company offers Branding and Market Research.
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Avicenne Studio

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Paris, France

Services provided

100% Blockchain

Focus Areas

15% Smart Contract Auditing

40% Web3

15% Decentralized Finance +2

15% Smart Contract Development

15% Tokenization

Avicenne Studio is a Blockchain company. They provide Blockchain and were established in 2020.
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Crypto4All

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Clichy, France

Services provided

50% Blockchain

30% Digital Engineering

20% Blockchain Marketing

Focus Areas

25% Smart Contract Auditing

25% Ethereum Development

25% Smart Contract Development +1

25% Web3

Established in 2015, Crypto4All is a Blockchain company. Their services include Blockchain and Digital Engineering.
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COSESO

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Paris, France

Services provided

20% Blockchain

20% Blockchain Marketing

20% Generative AI +2

20% Web Design

20% Web Development

Focus Areas

20% Smart Contract Auditing

30% Ethereum Development

30% Web3 +1

20% Smart Contract Development

COSESO is a web design company. Headquartered in Paris, France, the firm was founded in 2021. Their team specializes in Web Design and Web Development.
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HELYOSCHAIN

Not yet reviewed

Undisclosed

Undisclosed

Freelancer

Paris, France

Services provided

100% Blockchain

Focus Areas

50% Smart Contract Auditing

50% Smart Contract Development

HELYOSCHAIN, a Blockchain company, was established in 2016. The agency specializes in Blockchain, and is small.
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Focus (x-axis)

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Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top France Smart Contract Audit Services

Appstronaute

$10,000+

Undisclosed

10 - 49

Marseille, France

Ability to deliver

11.8/40.0

0/20 Reviews

6.9/10 Clients & Experience

4.9/10 Market Presence

Service focus

10% Blockchain

15% Smart Contract Auditing

90% Other

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SEROKELL

$10,000+

$50 - $99 / hr

50 - 249

Paris, France

Ability to deliver

39.4/40.0

19.6/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

20% Blockchain

10% Smart Contract Auditing

80% Other

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TOZEX

Undisclosed

Undisclosed

10 - 49

Clichy, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Blockchain

25% Smart Contract Auditing

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Agence MAP EMULSION

Undisclosed

Undisclosed

10 - 49

Marseille, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

20% Blockchain

100% Smart Contract Auditing

80% Other

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Avicenne Studio

Undisclosed

Undisclosed

10 - 49

Paris, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Blockchain

15% Smart Contract Auditing

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Crypto4All

Undisclosed

Undisclosed

2 - 9

Clichy, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

50% Blockchain

25% Smart Contract Auditing

50% Other

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COSESO

Undisclosed

Undisclosed

2 - 9

Paris, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

20% Blockchain

20% Smart Contract Auditing

80% Other

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HELYOSCHAIN

Undisclosed

Undisclosed

Freelancer

Paris, France

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Blockchain

50% Smart Contract Auditing

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Specialties

Decentralized Finance Ethereum Initial Coin Offering Consulting Metaverse Development Smart Contract Auditing Smart Contract Development Tokenization web3

Popular Locations in France

Smart Contract Auditing in Paris

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Top Smart Contract Auditors in France

List of the Top France Smart Contract Audit Services

Smart Contract Auditing Experience

Smart Contract Audit for Cryptocurrency Payment Platform

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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Why Trust Clutch

List of the Top France Smart Contract Audit Services

Similar Categories

Related Services

Specialties

Popular Locations in France