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Top Smart Contract Development Companies in Stockholm

Ratings Updated: May 7, 2026

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4 Leaders 5 Contenders

9 Companies

Country: Sweden

City: Stockholm

Blockchain Focus: Smart Contract Development

List of the Top Stockholm Smart Contract Developers

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Slashdev

5.0 18 reviews

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$5,000+

$50 - $99 / hr

10 - 49

Stockholm, Sweden

Services provided

10% Blockchain

20% Custom Software Development

20% Mobile App Development +4

20% Web Development

10% AI Development

10% E-Commerce Development

10% IT Staff Augmentation

Focus Areas

25% Smart Contract Development

50% Ethereum Development

25% Initial Coin Offering Consulting

Slashdev is a versatile software development and recruitment company specializing in web and mobile application development, as well as providing skilled developers for clients’ specific project needs. Overall, the feedback is highly positive, with approximately 90% of reviews highlighting their efficiency, strong project management, and technical expertise. Clients commend their quick recruitment process and flexibility, although some suggest improvements in deliverables clarity and payment systems.

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Reviews mention Exceptional performance
Clients have consistently praised Slashdev for their exceptional performance, highlighting their ability to deliver impressive results at competitive rates. One client noted that Slashdev exceeded expectations by providing a functional MVP in just a couple of months, while another emphasized their professionalism and quick communication. The overall sentiment reflects a strong satisfaction with Slashdev's value and commitment to excellence, indicating they are a reliable partner for software development needs.

Custom Software Development for Travel Company

5.0 Jun 24, 2022

Slashdev was able to deliver beyond expectations. At a fraction of the price of any other vendor they finished our software solution and helped us navigate building the next stages of our product.
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Industry Experience

Slashdev has demonstrated expertise across various industries, including Education, Information Technology, Software, Healthcare, Business Services, Real Estate, and Retail. Clients consistently commend their ability to refactor complex codebases, develop mobile applications, and recruit specialized talent efficiently. The feedback is overwhelmingly positive, highlighting strengths in project management, communication, and adaptability. Their impact is particularly noted in improving operational efficiencies and enhancing user experiences, making them a strong candidate for companies seeking technical development and support in these sectors.
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Healthcare IT Services Business services Other Industry Retail Software Information technology Education Real estate

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Stockholm, Sweden

Mäster Samuelsgatan 36
Stockholm, Sweden 111 57
2 - 5

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Reviewers in Stockholm commend Slashdev for their swift, skilled development teams, especially in iOS and React Native, supporting banking and EdTech apps. Clients appreciate their transparent communication, fair pricing, and proactive project management, resulting in successful, timely project outcomes.
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ERRNA

4.8 2 reviews

$5,000+

< $25 / hr

1,000 - 9,999

Stockholm, Sweden

Services provided

60% Blockchain

10% Cybersecurity

10% Marketing Strategy +2

10% Mobile App Development

10% Web Design

Focus Areas

20% Smart Contract Development

20% Ethereum Development

20% Initial Coin Offering Consulting +2

20% Metaverse Development

20% Web3

ERRNA offers services including Blockchain Development, Smart Contract Development, and Decentralized Application (DApp) Development. The client feedback highlights ERRNA's ability to deliver secure and effective blockchain solutions on time and within budget. Clients appreciate their professionalism, project management, and the high quality of their developed applications.

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Industry Experience

ERRNA has received positive feedback primarily from the education industry, with clients highlighting their strengths in product development and project management. Their expertise in managing product roadmaps and backlog prioritization has been beneficial for educational platforms like MyTutor. Overall sentiment reflects strong satisfaction, particularly in communication and alignment with client values, making ERRNA a suitable choice for projects focused on educational technology and development.
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Education

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Average Project Cost Breakdown

$10,000 to $49,000 (1)

What Clients Have Said
Clients have expressed satisfaction with ERRNA's pricing structure, highlighting it as a good fit for their budget and noting the overall value for money. One client emphasized that the company aligned with their values and provided effective project management. Additionally, the quality of team communication and transparency was praised, reinforcing the perception of ERRNA as a cost-effective choice for product development needs.
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Stockholm, Sweden

61 Sandhamnsgatan
Stockholm, Sweden 115 28
2 - 5

+1-435-800-0086

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OpenGeeksLab

4.9 17 reviews

$10,000+

$25 - $49 / hr

50 - 249

Stockholm, Sweden

Services provided

30% Blockchain

30% Custom Software Development

20% Mobile App Development +1

20% Web Development

Focus Areas

50% Smart Contract Development

35% Initial Coin Offering Consulting

15% Ethereum Development

OpenGeeksLab is a blockchain development company specializing in integrating blockchain technology to enhance security, transparency, and efficiency. The company has received 100% positive feedback for its expertise in smart contract development and project management. Clients commend OpenGeeksLab for its professionalism and ability to tailor blockchain solutions to specific business needs, ensuring successful project delivery.

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Reviews mention Great team
Clients consistently commend OpenGeeksLab for their exceptional teamwork and effective communication. One client highlighted the company's flexibility and efficiency, noting that they assembled a diverse team of 11 specialists for their project. Another client praised their thoughtful planning and well-coordinated workflow, emphasizing timely delivery and high-quality post-release support. Overall, the sentiment reflects a strong appreciation for the team's professionalism and collaborative approach, making them a favorable choice for complex projects.

Web-Based NFT App Dev for Metaverse Platform

5.0 Oct 19, 2022

I admire the overall approach and workflow: thoughtful planning, software architecture, well-established communication, timely delivery, and well-coordinated teamwork. Also, I’d like to mention high-quality post-release support and adding new features.
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Industry Experience

OpenGeeksLab has demonstrated expertise across multiple industries, including Beauty & Cosmetics, Advertising & Marketing, Software, Logistics & Supply Chain, Education, and Business Services. Clients consistently commend their professionalism, timely delivery, and ability to create tailored web solutions that enhance user engagement. Positive feedback highlights their strengths in project management and communication, particularly in developing user-friendly platforms and e-commerce systems. Overall, they are well-suited for projects in retail, software development, and educational platforms.
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Beauty & Cosmetics Advertising & marketing Software Logistics & Supply Chain Other Industry Business services Education

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Average Project Cost Breakdown

$10,000 to $49,000 (5) $50,000 to $199,999 (5)

What Clients Have Said
Clients consistently highlight OpenGeeksLab's competitive pricing and excellent value for money. One client noted that their pricing 'fit our budget' while another emphasized their 'good value for cost.' Overall sentiment reflects satisfaction with the affordability of services, suggesting that clients perceive a strong return on investment. Despite some minor suggestions for improvement, the majority of feedback underscores the company's ability to deliver high-quality results within budget constraints.
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Blocksism

4.0 1 review

$5,000+

$25 - $49 / hr

Freelancer

Stockholm, Sweden

Services provided

80% Blockchain

10% Custom Software Development

10% Web Development

Focus Areas

20% Smart Contract Development

20% Web3

15% Ethereum Development +3

15% Initial Coin Offering Consulting

15% Smart Contract Auditing

15% Tokenization

Blocksism is a blockchain development company specializing in creating smart contracts and blockchain prototypes, particularly within Hyperledger and Ethereum environments. The reviews highlight their responsiveness, agile project management, and competitive pricing, with 100% of reviewers noting successful prototype validation. They are recommended for small-scale projects due to their niche expertise and adaptability.

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Industry Experience

Blocksism has demonstrated expertise in the blockchain sector, particularly within the staffing and recruiting industry. Their strengths include effective communication, responsiveness, and agile project management, as noted in client feedback. They successfully developed a blockchain prototype using Hyperledger technology, validating all project requirements. Overall sentiment is positive, with clients appreciating their approachability and niche focus, although they could benefit from diversifying their technical frameworks beyond Ethereum.
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Other Industry

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Average Project Cost Breakdown

What Clients Have Said
Clients have expressed satisfaction with Blocksism's pricing, noting it as 'good' and reflecting strong value for money. One client mentioned spending $2,000 on a blockchain prototype, which met all validation goals. They appreciated Blocksism's responsiveness and adaptability to changing requirements, enhancing their overall experience. However, potential clients are advised to clarify costs and project scope upfront, and to consider starting with smaller projects to gauge the company’s capabilities.
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More Digital Studios Sweden AB

Not yet reviewed

$5,000+

$100 - $149 / hr

10 - 49

Stockholm, Sweden

Services provided

15% Blockchain

30% Digital Strategy

25% Advertising +3

10% AR/VR Development

10% UX/UI Design

10% Web Development

Focus Areas

100% Smart Contract Development

Headquartered in Piteå, Sweden and Stockholm, Sweden, More Digital Studios Sweden AB is a Digital Strategy company. Their services include Digital Strategy and Advertising.
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Stockholm, Sweden

7 Nybrogatan
Stockholm, Sweden 114 34
6 - 9

+46703983649

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Erlang Solutions

Not yet reviewed

$10,000+

Undisclosed

50 - 249

Stockholm, Sweden

Services provided

10% Blockchain

40% Custom Software Development

20% IT Strategy Consulting +4

10% IoT Development

10% Other Application Development

5% Computer Engineering

5% Mobile App Development

Focus Areas

50% Smart Contract Development

50% Ethereum Development

Erlang Solutions is a software development company. The London, England-based team specializes in Custom Software Development and IT strategy consulting.
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Stockholm, Sweden

Blekholmstorget 30 F
Stockholm, Sweden 111 64
21 - 30

+44 (0) 20 7456 1020

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skilledpeople.

Not yet reviewed

$10,000+

$100 - $149 / hr

2 - 9

Stockholm, Sweden

Services provided

40% Blockchain

40% Business Consulting

20% Digital Strategy

Focus Areas

70% Smart Contract Development

30% Ethereum Development

Skilledpeople. Is a small Blockchain company located in Stockholm, Sweden. Their services include Blockchain and Business Consulting.
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Sierratech

5.0 1 review

$5,000+

$50 - $99 / hr

50 - 249

Stockholm, Sweden

Services provided

20% Blockchain

30% Web Development

20% AI Development +3

10% AR/VR Development

10% Custom Software Development

10% Low/No Code Development

Focus Areas

50% Smart Contract Development

50% Web3

Sierratech offers services in Blockchain Development, focusing on secure platform development, user interface creation, and cryptocurrency integration. Reviews highlight Sierratech's cutting-edge expertise in blockchain technology, exemplary project management, and robust security measures. Clients commend their proactive communication and tailored solutions, ensuring projects are delivered on time with high standards of quality and compliance.

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Inc Dev

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Stockholm, Sweden

Services provided

17% Blockchain

17% Custom Software Development

17% UX/UI Design +3

17% Web Development

16% DevOps Managed Services

16% Mobile App Development

Focus Areas

45% Smart Contract Development

40% Web3

15% Ethereum Development

Inc Dev is a Stockholm, Sweden-based UX company. They focus on UX/UI Design and Custom Software Development.
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Focus

Proven

Market Leaders

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Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 ERRNA

2 OpenGeeksLab

3 Slashdev

4 Blocksism

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

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 4 Stockholm Smart Contract Developers

ERRNA

$5,000+

< $25 / hr

1,000 - 9,999

Stockholm, Sweden

Ability to deliver

32.9/40.0

16.2/20 Reviews

9.7/10 Clients & Experience

7/10 Market Presence

Service focus

60% Blockchain

20% Smart Contract Development

40% Other

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OpenGeeksLab

$10,000+

$25 - $49 / hr

50 - 249

Stockholm, Sweden

Ability to deliver

33.4/40.0

15.6/20 Reviews

10/10 Clients & Experience

7.8/10 Market Presence

Service focus

30% Blockchain

50% Smart Contract Development

70% Other

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Slashdev

$5,000+

$50 - $99 / hr

10 - 49

Stockholm, Sweden

Ability to deliver

35.5/40.0

17/20 Reviews

10/10 Clients & Experience

8.5/10 Market Presence

Service focus

10% Blockchain

25% Smart Contract Development

90% Other

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Blocksism

$5,000+

$25 - $49 / hr

Freelancer

Stockholm, Sweden

Ability to deliver

19.4/40.0

13/20 Reviews

1.8/10 Clients & Experience

4.6/10 Market Presence

Service focus

80% Blockchain

20% Smart Contract Development

20% Other

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More Digital Studios Sweden AB

$5,000+

$100 - $149 / hr

10 - 49

Stockholm, Sweden

Ability to deliver

14.3/40.0

0/20 Reviews

9/10 Clients & Experience

5.3/10 Market Presence

Service focus

15% Blockchain

100% Smart Contract Development

85% Other

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Erlang Solutions

$10,000+

Undisclosed

50 - 249

Stockholm, Sweden

Ability to deliver

12.2/40.0

0/20 Reviews

4.8/10 Clients & Experience

7.4/10 Market Presence

Service focus

10% Blockchain

50% Smart Contract Development

90% Other

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skilledpeople.

$10,000+

$100 - $149 / hr

2 - 9

Stockholm, Sweden

Ability to deliver

8.4/40.0

0/20 Reviews

3.8/10 Clients & Experience

4.6/10 Market Presence

Service focus

40% Blockchain

70% Smart Contract Development

60% Other

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Sierratech

$5,000+

$50 - $99 / hr

50 - 249

Stockholm, Sweden

Ability to deliver

4.9/40.0

0/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

20% Blockchain

50% Smart Contract Development

80% Other

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Inc Dev

$1,000+

$25 - $49 / hr

10 - 49

Stockholm, Sweden

Ability to deliver

6.1/40.0

0/20 Reviews

2.1/10 Clients & Experience

4/10 Market Presence

Service focus

17% Blockchain

45% Smart Contract Development

83% Other

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Specialties

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

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Top Smart Contract Development Companies in Stockholm

List of the Top Stockholm Smart Contract Developers

Reviews mention Exceptional performance

Custom Software Development for Travel Company

Industry Experience

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Industry Experience

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What Clients Have Said

Reviews mention Great team

Web-Based NFT App Dev for Metaverse Platform

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Industry Experience

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List of the Top 4 Stockholm Smart Contract Developers

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