Top Blockchain Companies & Developers in Stockholm

Ratings Updated: August 12, 2026

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11 Companies

Country: Sweden

City: Stockholm

List of the Top Stockholm Blockchain Development Companies

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Nextrope

5.0 18 reviews

Premier Verified

$25,000+

$50 - $99 / hr

10 - 49

Serves Stockholm, Sweden

Services provided

70% Blockchain

30% Custom Software Development

Nextrope is a Blockchain Development company specializing in Blockchain Solutions, Smart Contract Development, and Crypto Application Development. All reviews highlight their proactive approach, adaptability, and strong sense of ownership, with 100% positive feedback on their ability to align technological and business strategies effectively. Their expertise contributed to a 60% reduction in manual work and faster investment processes.

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Reviews mention Professional
Nextrope has received consistent positive feedback regarding their professionalism and project management capabilities. Clients noted their timely delivery and effective communication, with one reviewer stating, 'Nextrope was very professional, and they delivered the platform on time.' Additionally, another client highlighted the team's 'fantastic ability to recognize our needs,' underscoring their efficiency and responsiveness. Overall, the sentiment reflects strong satisfaction with Nextrope's professionalism and expertise in the blockchain space.

Web Dev for Blockchain Dev Company

5.0 Nov 7, 2021

Nextrope was very professional, and they delivered the platform on time. All the bugs noticed were successfully fixed. Know-how in the crypto and blockchain space and project management practices.
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Research & Design for Blockchain Music Streaming Service

5.0 Apr 1, 2020

The team at Nextrope was extremely easy to communicate with. Our flow of information was almost constant, and we frequently exchanged ideas during productive meetings. The team's fantastic ability to recognize our needs meant that they complemented the Opus philosophy perfectly.
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Research & Design for Blockchain Music Streaming Service

5.0 Apr 1, 2020

Nextrope works extremely efficiently and pragmatically. The Nextrope team understood our hosting needs perfectly and recognized the importance of the smart contracts.
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Research & Design for Blockchain Music Streaming Service

5.0 Apr 1, 2020

There was really not much to improved in the services provided by Nextrope - the whole operation is very smooth and professional, and the outcome is, simply put, amazing!
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1 of 1 Blockchain reviews are 5 stars

$10,000 – $49,000 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Platform Dev for Real Estate Investment Platform
5.0 — Nextrope developed a blockchain-based real estate tokenization platform for a real estate investment platform. The team designed the system's core architecture and developed the front- and backend. Read more
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Average Project Cost Breakdown

$10,000 to $49,000 (10) Less than $10,000 (4) $50,000 to $199,999 (2)

What Clients Have Said
Nextrope is frequently noted for providing excellent value for money, with clients highlighting their cost-effectiveness relative to the quality of service delivered. For instance, one CEO mentioned selecting Nextrope for their 'good value for cost,' while another emphasized the 'high quality of work' achieved within a 'reasonable budget.' Overall, clients express strong satisfaction with Nextrope's pricing, describing their services as both affordable and of high quality, contributing to successful project outcomes.
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Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)

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RedDuck

5.0 14 reviews

Verified

$5,000+

$50 - $99 / hr

10 - 49

Serves Stockholm, Sweden

Services provided

90% Blockchain

10% Web Development

RedDuck is a prominent Blockchain Development company specializing in Smart Contract Development, Decentralized Application (DApp) Development, and Blockchain Solutions. With a 100% positive feedback rate from reviewers, clients commend RedDuck for their technical precision, strategic product delivery, and exceptional project management. Approximately 80% of reviews highlight their responsive communication and ability to exceed expectations within budget constraints.

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Reviews mention Well-organized projects
Clients consistently praise RedDuck for their well-organized project management and timely delivery. One client noted, "RedDuck has been very productive in their time management and has always delivered on time," while another emphasized their "impeccable experience and deliverable product in extremely timely manner." The team's proactive communication and structured approach were highlighted as key factors contributing to the overall satisfaction, indicating strong alignment with client expectations and project goals.

Smart Contract Development for Blockchain Company

5.0 May 17, 2023

How organized and efficient they are. These guys were the best! Smart and efficient they brought great ideas to make our product even better! I highly recommend and will certainly be working with them again.
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Platform Development for Financial Services Company

5.0 Jul 31, 2023

RedDuck has been very productive in their time management and has always delivered on time. They have been very proactive in communication with daily stand-ups and managers holding the junior devs responsible for the delivery timeline promised.
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5 of 5 Blockchain reviews are 5 stars

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for FinTech Company
5.0 — RedDuck developed a DeFi platform for a financial technology company. The team built the client's smart contracts, backend infrastructure, frontend app, user dashboard, landing website, and a Read more
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Industry Experience

RedDuck has demonstrated significant expertise across various industries, notably Telecommunications, Financial Services, Gaming, and other tech-driven sectors. Feedback highlights their strengths in project management, timely delivery, and effective communication. Clients appreciate their ability to navigate complex development needs, particularly in blockchain and fintech environments. Overall, sentiment remains highly positive, suggesting RedDuck is particularly well-suited for projects in Financial Services and Blockchain-related industries, where their technical skills and strategic insight can drive impactful outcomes.
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Financial services Logistics & Supply Chain Gaming Other Industry

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Average Project Cost Breakdown

$50,000 to $199,999 (5) $10,000 to $49,000 (1)

What Clients Have Said
RedDuck consistently receives positive feedback regarding their overall cost and value for money. Clients highlighted that the pricing fit their budgets while delivering high-quality results, with one stating they chose RedDuck for 'good value for cost.' Another client emphasized that they were 'totally satisfied' with the project outcomes relative to costs. Overall, clients found RedDuck's services to be efficient and reliable, demonstrating a strong alignment between quality and pricing.
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Slashdev

5.0 18 reviews

Verified

$5,000+

$50 - $99 / hr

10 - 49

Stockholm, Sweden

Services provided

10% Blockchain

20% Custom Software Development

20% Mobile App Development +4 services

20% Web Development

10% AI Development

10% E-Commerce Development

10% IT Staff Augmentation

Slashdev is a versatile software development company known for its expertise in web and mobile applications, including microservices and SaaS products. With approximately 90% positive feedback, clients frequently commend their technical prowess, swift project delivery, and effective communication. Notably, 70% of reviewers highlight their ability to quickly recruit specialized developers. However, some suggest improvements in early infrastructure planning and project portal integration.

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Industry Experience

Slashdev has effectively operated across multiple industries, including Education, Information Technology, and Real Estate, delivering high-quality development and recruitment services. Clients consistently praise their expertise in software development, particularly in mobile and web applications, and highlight their agility in addressing complex challenges. The overall sentiment is positive, with notable strengths in project management, communication, and technical skills, making them a suitable partner for organizations seeking robust technological solutions in these sectors.
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Business services Other Industry Retail IT Services Software Information technology Education Real estate Healthcare

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Average Project Cost Breakdown

$10,000 to $49,000 (4) Less than $10,000 (3) $50,000 to $199,999 (1)

What Clients Have Said
Clients consistently commend Slashdev for their competitive pricing and high value for money. For instance, one client noted that they selected Slashdev due to their pricing fitting within budget and providing great value. Another emphasized that Slashdev delivered beyond expectations at a fraction of the cost compared to competitors. Overall, the sentiment reflects satisfaction with the affordability of services while maintaining quality, with clients expressing a willingness to continue partnerships based on these favorable financial aspects.
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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

Stockholm-based clients praise Slashdev for their expertise in iOS and mobile app development, highlighting successful projects for banking and EdTech sectors. They emphasize the company's transparency, professionalism, and ability to quickly match talented developers for complex, remote projects.
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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 services

10% Mobile App Development

10% Web Design

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 service

20% Web 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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Industry Experience

OpenGeeksLab has demonstrated expertise across various industries, including retail apparel and fashion, cryptocurrency, education, and business services. Clients consistently highlight the company's strengths in web and mobile application development, effective project management, and strong communication. Positive feedback emphasizes their ability to enhance user experience, increase sales, and deliver projects on time. Overall, OpenGeeksLab is well-suited for businesses seeking robust digital solutions in dynamic sectors such as e-commerce, technology, and education.
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Beauty & Cosmetics Logistics & Supply Chain Advertising & marketing Other Industry Education Software Business services

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Average Project Cost Breakdown

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

What Clients Have Said
OpenGeeksLab is recognized for delivering strong value for money, with several clients highlighting their cost-effectiveness and quality of service. For instance, one client noted that their pricing fit the budget and provided great value, while another emphasized their flexibility and cost-efficiency compared to competitors. Overall, feedback reflects a positive sentiment regarding the company's pricing structure, with many clients expressing satisfaction with the outcomes relative to their investment.
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Canada (3) United States (2) England (2) France (1) United Arab Emirates (1) Ukraine (1)

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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

Blocksism is a blockchain development company specializing in creating smart contracts and utilizing Hyperledger technology. Reviews highlight their agility, responsiveness, and effective communication, with 100% of feedback emphasizing a successful prototype completion. Clients appreciate their competitive pricing, although suggestions include exploring frameworks beyond Ethereum. Overall, Blocksism delivers efficiently on niche blockchain solutions with a clear emphasis on client collaboration.

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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 services

10% AR/VR Development

10% UX/UI Design

10% Web 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 services

10% IoT Development

10% Other Application Development

5% Computer Engineering

5% Mobile App 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

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

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Stockholm, Sweden

Services provided

40% Blockchain

60% Custom Software Development

Clever Compliance is a software development firm. Their small team is based in Stockholm, Sweden and Sollentuna, Sweden. Their services include Custom Software Development and Blockchain.
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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 services

10% AR/VR Development

10% Custom Software Development

10% Low/No Code Development

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 services

17% Web Development

16% DevOps Managed Services

16% Mobile App Development

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

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Uppsala, Sweden

Services provided

100% Blockchain

Dwellir is a Blockchain company. The team is located in Uppsala, Sweden, and their services include Blockchain.
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Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

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 Blockchain Development Companies

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

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

70% Other

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Slashdev

$5,000+

$50 - $99 / hr

10 - 49

Stockholm, Sweden

Ability to deliver

35.1/40.0

16.6/20 Reviews

10/10 Clients & Experience

8.5/10 Market Presence

Service focus

10% Blockchain

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% 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

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

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

60% Other

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Clever Compliance

Undisclosed

Undisclosed

2 - 9

Stockholm, Sweden

Ability to deliver

5.3/40.0

0/20 Reviews

0/10 Clients & Experience

5.3/10 Market Presence

Service focus

40% Blockchain

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

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

83% Other

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Dwellir

Undisclosed

Undisclosed

10 - 49

Uppsala, Sweden

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

100% Blockchain

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Top Blockchain Companies & Developers in Stockholm

List of the Top Stockholm Blockchain Development Companies

Reviews mention Professional

Web Dev for Blockchain Dev Company

Research & Design for Blockchain Music Streaming Service

Research & Design for Blockchain Music Streaming Service

Research & Design for Blockchain Music Streaming Service

Blockchain Platform Dev for Real Estate Investment Platform

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Well-organized projects

Smart Contract Development for Blockchain Company

Platform Development for Financial Services Company

Blockchain Development for FinTech Company

Industry Experience

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List of the Top 4 Stockholm Blockchain Development Companies

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