Top Blockchain Companies & Developers in Stockholm
11 Companies
List of the Top Stockholm Blockchain Development Companies
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$10,000+$50 - $99 / hr1,000 - 9,999Serves Stockholm, SwedenServices provided
10% Blockchain10% AI Development10% AR/VR Development +7 services10% Cloud Consulting & SI10% Custom Software Development10% E-Commerce Development10% IT Staff Augmentation10% Mobile App Development10% Robotics Process Automation10% Web DevelopmentSee all 72 projectsInnowise is a Blockchain Development company noted for its expertise in Blockchain Technology, Smart Contract Development, and Decentralized System Development. Across their reviews, 100% of clients highlight their professionalism, responsiveness, and ability to meet deadlines. Additionally, 80% of reviewers commend their strategic consulting, further emphasizing their depth of expertise and commitment to delivering high-quality blockchain solutions.
Reviews mention Openness
Clients express a strong sentiment of openness regarding Innowise Group's communication and adaptability. One client highlighted the team's eagerness to understand project challenges and their flexibility in using the client's management tools. Another client remarked on the team's open-mindedness towards problem-solving and their commitment to addressing client needs. Overall, feedback indicates that Innowise fosters a collaborative environment, ensuring effective communication and responsiveness throughout the project lifecycle.-
Video Streaming Platform Dev for IT Services Company
5.0 May 16, 2022Communication, easiness and response time. Not only with the developer, Slava we could see how outstanding are his skillks, engament and openess to work with us, but with Buisness Developer Olga, we could see this same values and customer approach. Overall work with Innowise Group was very professional and had the highest standards expected.
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Python Code Development for Neurophysiological Startup
5.0 Apr 28, 2022They had good communication skills, and they were open-minded to any problems and solutions. They tried to look at the problem from our perspective, and they were ready to do everything to help us.
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1 of 1 reviews is 5 starsUnknown avg. project costRead 1 Recent ReviewReviewed 1 time in the past 6 months
In the past six months, client feedback for Innowise has been overwhelmingly positive. One client highlighted their successful creation of a custom database that streamlined reporting and reduced labor, emphasizing effective project management and timely communication. They noted a significant improvement over prior experiences with another firm, citing Innowise's adherence to budget and deadlines. Overall, clients appreciate Innowise's attention to detail and commitment to delivering quality solutions without any reported areas for improvement.Was this helpful?
5 of 5 Blockchain reviews are 5 stars$10,000 – $49,000 avg. project costRead 5 ReviewsBlockchain PROJECT HIGHLIGHT
Blockchain & Custom Software Dev for Art Management System
5.0 — Innowise provided blockchain and custom software development services for an art management system. The team developed the MVP of an art certificate tokenization system, managing front- and backend Read moreWas this helpful?
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United States (15) Germany (10) Italy (6) England (4) Switzerland (4) Israel (3) Estonia (3) Luxembourg (2) France (2) Ireland (2) Lithuania (1) Qatar (1) Armenia (1) Finland (1) New Zealand (1) Norway (1) Poland (1) Georgia (1) South Africa (1) Sweden (1) Denmark (1) Thailand (1) Belarus (1) Bosnia and Herzegovina (1)This provider is fluent in 7 languages:
- English
- Spanish
- German
- French
- Italian
- Polish
- Ukrainian
This provider is available in 9 time zones:
- Greenwich Mean Time (GMT)
- Central European Time (CET)
- Central Standard Time (CST)
- Eastern European Time (EET)
- Eastern Standard Time (EST)
- Pacific Standard Time (PST)
- Phoenix Standard Time (PNT)
- Mountain Standard Time (MST)
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$10,000+$50 - $99 / hr10 - 49Serves Stockholm, SwedenServices provided
100% BlockchainSee all 13 projectsRedDuck is a blockchain development company specializing in delivering comprehensive blockchain solutions, including smart contract development, distributed ledger technology, and decentralized application (DApp) development. Clients consistently praise their technical precision, proactive communication, and ability to deliver projects on time, with a 100% satisfaction rate highlighted across multiple reviews. Their expertise in blockchain technology and strategic product development is noteworthy.
Reviews mention Detail-oriented
Clients consistently praised RedDuck for their detail-oriented approach, highlighting their technical precision and thoroughness in project execution. One client noted their proactive nature and investment in the project's success, stating, "Their team was proactive, detail-oriented, and genuinely invested in the success of our platform." Additionally, feedback emphasized their structured methodology, which minimized concerns and ensured a smooth collaboration, reflecting a high level of professionalism and adaptability.-
Smart Contract Development for Metaverse
5.0 May 26, 2023The RedDuck team responses extremely in-time. We usually set up in-day meetings so we could be on schedule and in context. Their ability to take a deep look at a subject is impressive.
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Blockchain Development for FinTech Company
5.0 Apr 23, 2025What impressed me most about RedDuck was their ability to manage a complex, full-cycle development project with both technical precision and creative vision. They combined strong blockchain expertise with a clear understanding of business needs, delivering not just code, but a strategic product. Their team was proactive, detail-oriented, and genuinely invested in the success of our platform.
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5 of 5 Blockchain reviews are 5 stars2 new reviews for Blockchain in past 6 months$50,000 – $199,999 avg. project costRead 5 ReviewsBlockchain 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 moreWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat 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.Was this helpful?
More responsive than most other service providers
Get in TouchRedDuck is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.Was this helpful?
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Slashdev
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$5,000+$25 - $49 / hr10 - 49Stockholm, SwedenServices provided
10% Blockchain20% Custom Software Development20% Mobile App Development +4 services20% Web Development10% AI Development10% E-Commerce Development10% IT Staff AugmentationSee all 18 projectsSlashdev 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.
2 of 2 reviews are 5 stars$10,000 – $49,000 avg. project costRead 2 Recent ReviewsReviewed 2 times in the past 6 months
In the last six months, client feedback for Slashdev has been overwhelmingly positive, highlighting their effective project management and technical expertise. One client noted a 50% reduction in onboarding time and a 15% increase in Google reviews after implementing a new system. Another client praised their ability to refactor 90% of a problematic codebase while maintaining workflow continuity. Overall, clients appreciate Slashdev's flexibility, direct communication, and proactive approach, though some suggested clearer initial deliverables could enhance collaboration.Was this helpful?
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 estateWas this helpful?
See All Locations (2)Stockholm, Sweden
Mäster Samuelsgatan 36
Stockholm, Sweden 111 572 - 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
Swedish clients in Stockholm commend Slashdev for their swift, high-quality mobile development, including banking apps and EdTech features. Reviewers value their transparency, skilled senior engineers, and proactive project management, resulting in successful, timely project outcomes.Read Local ReviewsWas this helpful?
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$5,000+< $25 / hr1,000 - 9,999Stockholm, Sweden
Services provided
60% Blockchain10% Cybersecurity10% Marketing Strategy +2 services10% Mobile App Development10% Web DesignSee all 2 projectsERRNA 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.
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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EducationWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat 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.Was this helpful?
See All Locations (15)Stockholm, Sweden
61 Sandhamnsgatan
Stockholm, Sweden 115 282 - 5
+1-435-800-0086
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$10,000+$25 - $49 / hr50 - 249Stockholm, Sweden
Services provided
30% Blockchain30% Custom Software Development20% Mobile App Development +1 service20% Web DevelopmentSee all 17 projectsOpenGeeksLab 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.
Reviews mention Professional
The sentiment regarding professionalism at OpenGeeksLab is overwhelmingly positive. Clients praised their outstanding expertise, commitment to deadlines, and proactive communication. One client noted their 'excellent project management' and 'strong communication,' while another highlighted their ability to deliver tailored solutions and responsiveness to needs. Overall, clients appreciated the professionalism and dedication displayed, which contributed to successful project outcomes. Minor suggestions for improvement included clearer communication and enhanced documentation.-
Web Revamp for Apparel & Accessories Shop
5.0 May 20, 2023OpenGeeksLab exhibited excellent project management throughout the engagement. They consistently delivered items on time, adhering to the agreed-upon milestones and deadlines. Whenever I had any specific needs or concerns, their team promptly addressed them, providing effective solutions and keeping me informed about the progress. Outstanding expertise, professionalism, and dedication set OpenGeeksLab apart as an impressive and unique company in the web development industry.
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App Development for Sports Services Company
5.0 Jul 21, 2018The company performed great. The product manager did his best to meet our needs, goals, and deadlines. They constantly strive for excellence, which sets them apart from other companies. They build highly-professional apps, provide unique solutions, and respond to tough time challenges.
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Software Development for Business Management Company
4.0 Feb 12, 2018They performed very well by using their own knowledge to plan the amount of time needed to develop each section. This gave us great confidence that we had great and self-motivated developers involved. OpenGeeksLab has developers that are easy to work with. They provide professional services in management and development. Their understanding and effort of work are unquestionable.
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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 EducationWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat 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.Was this helpful?
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$5,000+$25 - $49 / hrFreelancerStockholm, Sweden
Services provided
80% Blockchain10% Custom Software Development10% Web DevelopmentSee all 1 projectsBlocksism 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.
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 IndustryWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat 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.Was this helpful?
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$5,000+$100 - $149 / hr10 - 49Stockholm, Sweden
Services provided
15% Blockchain30% Digital Strategy25% Advertising +3 services10% AR/VR Development10% UX/UI Design10% Web DevelopmentHeadquartered in Piteå, Sweden and Stockholm, Sweden, More Digital Studios Sweden AB is a Digital Strategy company. Their services include Digital Strategy and Advertising.
Read moreSee All Locations (2)Stockholm, Sweden
7 Nybrogatan
Stockholm, Sweden 114 346 - 9
+46703983649
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$10,000+Undisclosed50 - 249Stockholm, Sweden
Services provided
10% Blockchain40% Custom Software Development20% IT Strategy Consulting +4 services10% IoT Development10% Other Application Development5% Computer Engineering5% Mobile App DevelopmentErlang Solutions is a software development company. The London, England-based team specializes in Custom Software Development and IT strategy consulting.
Read moreSee All Locations (4)Stockholm, Sweden
Blekholmstorget 30 F
Stockholm, Sweden 111 6421 - 30
+44 (0) 20 7456 1020
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$10,000+$100 - $149 / hr2 - 9Stockholm, Sweden
Services provided
40% Blockchain40% Business Consulting20% Digital StrategySkilledpeople. Is a small Blockchain company located in Stockholm, Sweden. Their services include Blockchain and Business Consulting.
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UndisclosedUndisclosed2 - 9Stockholm, Sweden
Services provided
40% Blockchain60% Custom Software DevelopmentClever 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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$5,000+$50 - $99 / hr50 - 249Stockholm, Sweden
Services provided
20% Blockchain30% Web Development20% AI Development +3 services10% AR/VR Development10% Custom Software Development10% Low/No Code DevelopmentSee all 1 projectsSierratech 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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$1,000+$25 - $49 / hr10 - 49Stockholm, Sweden
Services provided
17% Blockchain17% Custom Software Development17% UX/UI Design +3 services17% Web Development16% DevOps Managed Services16% Mobile App DevelopmentInc Dev is a Stockholm, Sweden-based UX company. They focus on UX/UI Design and Custom Software Development.
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UndisclosedUndisclosed10 - 49Uppsala, Sweden
Services provided
100% BlockchainDwellir is a Blockchain company. The team is located in Uppsala, Sweden, and their services include Blockchain.
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List of the Top 4 Stockholm Blockchain Development Companies
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$5,000+< $25 / hr1,000 - 9,999San Jose, CA
Ability to deliver
32.9/40.016.2/20 Reviews9.7/10 Clients & Experience7/10 Market PresenceService focus
60% Blockchain40% Other -
$10,000+$25 - $49 / hr50 - 249Stockholm, Sweden
Ability to deliver
33.6/40.015.8/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
30% Blockchain70% Other -
$5,000+$25 - $49 / hr10 - 49Winter Park, FL
Ability to deliver
35.7/40.017.2/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
10% Blockchain90% Other -
$5,000+$25 - $49 / hrFreelancerStockholm, Sweden
Ability to deliver
19.4/40.013/20 Reviews1.8/10 Clients & Experience4.6/10 Market PresenceService focus
80% Blockchain20% Other -
$5,000+$100 - $149 / hr10 - 49Piteå, Sweden
Ability to deliver
14.3/40.00/20 Reviews9/10 Clients & Experience5.3/10 Market PresenceService focus
15% Blockchain85% Other -
$10,000+Undisclosed50 - 249London, England
Ability to deliver
12.2/40.00/20 Reviews4.8/10 Clients & Experience7.4/10 Market PresenceService focus
10% Blockchain90% Other -
$10,000+$100 - $149 / hr2 - 9Stockholm, Sweden
Ability to deliver
8.4/40.00/20 Reviews3.8/10 Clients & Experience4.6/10 Market PresenceService focus
40% Blockchain60% Other -
UndisclosedUndisclosed2 - 9Stockholm, Sweden
Ability to deliver
5.3/40.00/20 Reviews0/10 Clients & Experience5.3/10 Market PresenceService focus
40% Blockchain60% Other -
$5,000+$50 - $99 / hr50 - 249Stockholm, Sweden
Ability to deliver
4.9/40.00/20 Reviews0/10 Clients & Experience4.9/10 Market PresenceService focus
20% Blockchain80% Other -
$1,000+$25 - $49 / hr10 - 49Stockholm, Sweden
Ability to deliver
6.1/40.00/20 Reviews2.1/10 Clients & Experience4/10 Market PresenceService focus
17% Blockchain83% Other -
UndisclosedUndisclosed10 - 49Uppsala, Sweden
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
100% Blockchain
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