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Top Blockchain Companies & Developers in Stockholm

Ratings Updated: June 24, 2026
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11 Companies

Country: Sweden
City: Stockholm

List of the Top Stockholm Blockchain Development Companies

  • Featured

    What are Featured Providers?

    Nextrope Logotype

    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.

    See all 18 projects

    Reviews mention Helpful

    Clients consistently praised Nextrope for their high level of helpfulness and responsiveness. For instance, one project manager noted that the team was 'very helpful with our questions' and maintained 'continuous feedback.' Similarly, a CEO highlighted that Nextrope was 'always helpful and ready to give advice,' reflecting a strong commitment to client support. Overall, the sentiment regarding helpfulness is overwhelmingly positive, with clients appreciating the team's flexibility and dedication to achieving project goals.
    • EIP-20 Ethereum Token for Web3 Solution Provider
      5.0 Mar 12, 2022

      The communication in the project was on a very high level, there was continuous feedback from both sides. The project manager was always up to date and was very helpful with our questions. We had weekly status calls with him but also we were in touch via Discord all the time.

      Read Full Review
    • Software Development for Interim CFO Company
      5.0 Jul 16, 2020

      Nextrope was not only our development team but our technology partner. They are always helpful and ready to give advice.

      Read Full Review
    Read All Reviews
    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
    Read 1 Review

    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

    Overall, clients have expressed positive sentiments regarding Nextrope's cost and value for money. For instance, one CEO noted their selection was based on 'good value for cost,' while another highlighted that Nextrope's deliverables exceeded expectations, aligning with the standards of major consulting firms. Clients appreciated the flexibility and responsiveness of the team, often remarking on the high-quality outcomes delivered within reasonable budgets. Overall, Nextrope is perceived as a reliable partner that offers significant value relative to its pricing.
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    View projects from:

    Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)
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    RedDuck Logotype

    RedDuck

    5.0 14 reviews
    $5,000+
    $50 - $99 / hr
    10 - 49
    Serves Stockholm, Sweden

    Services provided

    100% Blockchain

    RedDuck is a prominent Blockchain Development company known for delivering comprehensive blockchain solutions, including smart contract and cryptocurrency development. The company consistently receives praise for its technical expertise, project management, and responsive communication, with over 90% of reviewers highlighting their professionalism and ability to meet deadlines. Clients appreciate their strategic approach and commitment to delivering high-quality, secure, and user-friendly decentralized applications.

    See all 14 projects

    Reviews mention Efficient

    Clients consistently praise RedDuck for their efficiency and timely delivery of projects. One CEO noted that the team provided an 'impeccable experience and deliverable product in extremely timely manner,' highlighting their organizational skills. Another client emphasized their 'smart and efficient' approach, which contributed to enhancing the product. Overall, the sentiment surrounding efficiency is overwhelmingly positive, with no identified areas for improvement.
    • Smart Contract Development for Blockchain Company
      5.0 May 17, 2023

      Mark and his team delivered an impeccable experience and deliverable product in an extremely timely manner. These guys were the best! Smart and efficient they brought great ideas to make our product even better! How organized and efficient they are.

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    Average Project Cost Breakdown

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

    What Clients Have Said

    Clients consistently praised RedDuck for offering excellent value for money and fitting within their budgetary constraints. One client noted their 'good value for cost' and another highlighted that their pricing 'fit our budget.' Overall sentiment reflects satisfaction with the company's pricing relative to the quality of services provided, with multiple reviews emphasizing timely delivery and effective project management as key aspects of their positive experience.
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    More responsive than most other service providers

    RedDuck is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch

    View projects from:

    Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)

    This provider is fluent in 4 languages:

    • English
    • German
    • Ukrainian
    • Russian

    This provider is available in 37 time zones:

    • Colombia Time (COT)
    • Near East Time (NET)
    • Middle East Time (MET)
    • China Taiwan Time (CTT)
    • Gulf Standard Time (GST)
    • Brazil Eastern Time (BET)
    • Greenwich Mean Time (GMT)
    • India Standard Time (IST)
    View all time zones
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  • Slashdev Logotype

    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 IT services company offering tailored solutions for software development, web and mobile app development, and recruitment of specialized developers. Based on extensive client feedback, Slashdev is praised for its strong technical expertise, flexibility, and timely delivery, with approximately 90% of reviews highlighting their exceptional project management and responsiveness. Clients also commend their ability to quickly understand complex systems and provide scalable solutions, although some suggest improvement in deliverable clarity during planning stages.

    See all 18 projects

    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 highlight Slashdev's competitive pricing and excellent value for money. One client noted they selected Slashdev due to their 'good value for cost' and 'pricing fit our budget.' Another emphasized that they received 'the best value on the market' and appreciated the company's commitment to delivering high-quality results at a fraction of competitors' prices. Overall, feedback reflects strong satisfaction with the balance between cost and the quality of service provided.
    Read All Reviews

    View projects from:

    England (4) United States (3) Sweden (2) Armenia (1) Brazil (1) Canada (1) Greece (1)

    Stockholm, Sweden

    Mäster Samuelsgatan 36
    Stockholm, Sweden 111 57

    2 - 5

    See All Locations (8)

    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, delivering tailored solutions for banking and EdTech projects. They highlight efficient communication, quick talent matching, and professional support, emphasizing the team's deep industry knowledge and fair pricing.
    Read Local Reviews
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  • ERRNA Logotype

    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.

    See all 2 projects

    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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    Select Industry to see insights

    Education

    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.
    Read All Reviews

    Stockholm, Sweden

    61 Sandhamnsgatan
    Stockholm, Sweden 115 28

    2 - 5

    +1-435-800-0086

    See All Locations (33)
    View Profile
  • OpenGeeksLab Logotype

    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.

    See all 17 projects

    Reviews mention Unique expertise

    Clients consistently highlight OpenGeeksLab's unique expertise in web development, particularly within the retail apparel sector. One client noted their 'outstanding expertise, professionalism, and dedication,' which contributed to tailored solutions that surpassed expectations. The company's deep understanding of user experience and attention to detail were emphasized, alongside their commitment to client satisfaction. Overall, the sentiment is highly positive, with clients praising their ability to deliver impressive results and effective communication throughout the project.
    • Web Revamp for Apparel & Accessories Shop
      5.0 May 20, 2023

      Outstanding expertise, professionalism, and dedication set OpenGeeksLab apart as an impressive and unique company in the web development industry. Their deep understanding of the retail apparel and fashion sector allowed them to deliver tailored solutions that exceeded our expectations. From visually appealing designs to seamless user experiences, their attention to detail was evident.

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    Industry Experience

    OpenGeeksLab has demonstrated expertise across diverse industries, including retail apparel, advertising, cryptocurrency, education, and business services. Clients from the fashion industry praised their ability to enhance user engagement through modern website redesigns, while those in advertising appreciated their collaborative approach for optimized web projects. In cryptocurrency and other specialized sectors, OpenGeeksLab's flexibility and responsiveness were highlighted. Overall, feedback reflects a strong sentiment towards their professionalism, effective communication, and high-quality deliverables, making them suitable for various industry needs.

    Read All Reviews

    Select Industry to see insights

    Beauty & Cosmetics Advertising & marketing Software Logistics & Supply Chain Other Industry Business services Education

    Average Project Cost Breakdown

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

    What Clients Have Said

    Clients consistently praised OpenGeeksLab for their competitive pricing and exceptional value for money. A Director of Business Development noted that their pricing fit the budget while delivering great value, leading to a 30% increase in online sales. Similarly, a project manager highlighted their cost-efficiency, stating they were the most flexible and cost-effective choice after interviewing multiple vendors. Overall, the sentiment reflects high satisfaction with the balance of quality and cost-effectiveness.
    Read All Reviews

    View projects from:

    Canada (3) United States (2) England (2) France (1) United Arab Emirates (1) Ukraine (1)
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  • Blocksism Logotype

    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 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.

    See all 1 projects

    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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    Select Industry to see insights

    Other Industry

    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 Logotype

    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.

    Read more

    Stockholm, Sweden

    7 Nybrogatan
    Stockholm, Sweden 114 34

    6 - 9

    +46703983649

    See All Locations (2)
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  • Erlang Solutions Logotype

    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.

    Read more

    Stockholm, Sweden

    Blekholmstorget 30 F
    Stockholm, Sweden 111 64

    21 - 30

    +44 (0) 20 7456 1020

    See All Locations (5)
    View Profile
  • skilledpeople. Logotype

    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.

    Read more
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  • Clever Compliance Logotype

    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.

    Read more
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  • Sierratech Logotype

    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.

    See all 1 projects
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  • Inc Dev Logotype

    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.

    Read more
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  • Dwellir Logotype

    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.

    Read more
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1 ERRNA
2 OpenGeeksLab
3 Slashdev
4 Blocksism

List of the Top 4 Stockholm Blockchain Development Companies

  1. ERRNA Logotype

    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
    View Profile Visit Website
  2. OpenGeeksLab Logotype

    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
    View Profile Visit Website
  3. Slashdev Logotype

    Slashdev

    $5,000+
    $50 - $99 / hr
    10 - 49
    Stockholm, Sweden

    Ability to deliver

    35.3/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    8.5/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    View Profile Visit Website
  4. Blocksism Logotype

    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
    View Profile Visit Website
  5. More Digital Studios Sweden AB Logotype

    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
    View Profile Visit Website
  6. Erlang Solutions Logotype

    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
    View Profile Visit Website
  7. skilledpeople. Logotype

    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
    View Profile Visit Website
  8. Clever Compliance Logotype

    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
    View Profile Visit Website
  9. Sierratech Logotype

    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
    View Profile Visit Website
  10. Inc Dev Logotype

    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
    View Profile Visit Website
  11. Dwellir Logotype

    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
    View Profile Visit Website

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