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Top Blockchain Companies & Developers in Oslo

Ratings Updated: November 6, 2026
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3 Leaders 2 Contenders

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5 Companies

Country: Norway
City: Oslo

List of the Top Oslo 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 Oslo, Norway

    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 Creative

    Nextrope has received positive feedback regarding their creative solutions and high-quality work. A CEO noted their impressive design samples and the beauty of the platform they developed, emphasizing that Nextrope's creativity was evident in the project. The client praised their responsiveness and efficiency, stating that the platform's appealing design contributed to a 90% response rate from potential clients. Overall, the sentiment reflects a strong appreciation for Nextrope's creative capabilities.
    • Web & Mobile App Development for Content Management Company
      5.0 Apr 2, 2020

      Nextrope is very creative in their solutions, they provide only the highest quality of work and never settle on less. They also work very fast and respond very quickly to any changes that are required.

      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

    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.
    Read All Reviews

    More responsive than most other service providers

    Nextrope 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 Profile Visit Website
    RedDuck Logotype

    RedDuck

    5.0 17 reviews
    Verified Clutch Guarantee
    $5,000+
    $50 - $99 / hr
    10 - 49
    Serves Oslo, Norway

    Services provided

    90% Blockchain
    10% Web Development

    RedDuck is a blockchain development company specializing in smart contract development, decentralized application (DApp) development, and blockchain solutions. With a 100% positive feedback rate, clients commend their creative problem-solving, strong project management, and efficient communication, leading to timely deliveries and high-quality products. Approximately 85% of reviewers highlight RedDuck’s expertise in blockchain technology and smart contracts as standout features.

    See all 17 projects
    4 of 4 reviews are 5 stars
    3 new reviews for Blockchain services
    $50,000 – $199,999 avg. project cost

    Reviewed 4 times in the past 6 months

    RedDuck has received positive feedback over the last six months, highlighting their effective problem-solving and timely delivery. Clients appreciate their responsiveness and ability to clarify assumptions during projects. For instance, one client noted that RedDuck's architectural advice significantly influenced their project direction. Another client praised their creative approach in developing smart contracts and dApps, emphasizing the company's commitment to innovation. Overall, clients express satisfaction with RedDuck's performance and communication, with no major areas for improvement identified.
    Read 4 Recent Reviews
    8 of 8 Blockchain reviews are 5 stars
    3 new reviews for Blockchain in past 6 months
    $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
    Read 8 Reviews

    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
    $6,400 Allocation of an ethereum smart-contract developer $9,600 Allocation of a senior ethereum developer RWA/DeFi $12,800 Allocation of a tech-lead developer RWA/DeFi/Web3

    Software Development (Ethereum/EVM)

    Development of Blockchain/Web3 software focusing on smart-contracts / DeFi / RWA on Ethereum network.
    View Packages
    View Profile Visit Website
  • Altoros Logotype

    4.8 34 reviews
    $25,000+
    $50 - $99 / hr
    250 - 999
    Oslo, Norway

    Services provided

    40% Blockchain
    25% Custom Software Development
    10% Enterprise App Modernization +4 services
    10% Web Development
    5% IT Staff Augmentation
    5% Microservices Architecture Services
    5% Mobile App Development

    Altoros is a software development company specializing in custom software solutions, including web and mobile development, UX design, and staff augmentation. The reviews are overwhelmingly positive, with 90% highlighting their professionalism and effective communication. Clients commend Altoros for their timely delivery, adaptability, and high-quality work, although there is a suggestion for improved transparency in cybersecurity compliance.

    See all 34 projects

    Industry Experience

    Altoros has garnered positive feedback across various industries, notably in Financial Services, Software Development, and Media. Clients commend their expertise in fintech solutions and mobile app development, highlighting timely communication, project management, and technical proficiency. In Financial Services, they excel in creating automated workflows and SaaS applications. In Software Development, their team complements existing resources effectively, while in Media, they contribute significantly to user-centric tools. Overall, Altoros is recommended for clients seeking reliable technology partners across these sectors.

    Read All Reviews

    Select Industry to see insights

    Financial services Food & Beverages Agriculture Engineering Healthcare Advertising & marketing Other Industry Information technology Consumer Products Research Software Media IT Services

    Average Project Cost Breakdown

    $200,000 to $999,999 (8) $50,000 to $199,999 (6) $10,000 to $49,000 (4) $1,000,000 to $9,999,999 (4) Less than $10,000 (1)

    What Clients Have Said

    Clients consistently express satisfaction with Altoros' pricing and overall value. Feedback highlights 'good value for cost' and 'impressive pricing' as significant factors for selecting Altoros. One client noted that Altoros delivered quality work under budget and ahead of schedule, while another emphasized their ability to provide high-quality engineers at reasonable rates. Overall, clients appreciate the balance of cost and quality, often remarking that Altoros offers exceptional service compared to competitors.
    Read All Reviews

    Oslo, Norway

    2 Tordenskiolds gate
    Oslo, Norway 0160

    16 - 20

    +47 21 92 93 00

    See All Locations (11)

    Review Rating from Clients

    4.8/5.0

    Quality

    4.8

    Schedule

    4.8

    Cost

    4.5

    Willing to Refer

    5.0

    Reviewers in Oslo emphasize Altoros's expertise in native iOS work, from a paperless board-meeting app to a security-sensitive application. They describe the team as professional and self-directed, noting dependable deadlines, effective collaboration, and valuable guidance throughout ongoing engagements.
    Read Local Reviews
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  • IdeaSoft.io Logotype

    4.9 27 reviews
    $50,000+
    $50 - $99 / hr
    50 - 249
    Oslo, Norway

    Services provided

    80% Blockchain
    5% AI Development
    5% Custom Software Development +2 services
    5% UX/UI Design
    5% Web Development

    IdeaSoft.io is a Blockchain Development company specializing in services such as Smart Contract Development, Decentralized Application (DApp) Development, and Crypto Application Development. With a 100% positive feedback rate, their clients highlight the team's unmatched expertise in blockchain technology, timely project delivery, and strong cultural fit alongside excellent project management and communication.

    See all 27 projects

    Reviews mention Dedicated

    The overall sentiment regarding IdeaSoft.io's dedication is highly positive. Clients commend their commitment, noting instances where the team worked long hours and quickly mobilized additional resources to meet tight deadlines. One client highlighted their transparency and reliability, stating, "I can trust them and I know that if they tell me something, it’s 100% true." This level of dedication fosters confidence in their ability to deliver quality results consistently.
    • Outsourcing for Software Development Company
      5.0 Nov 26, 2018

      They’re a very dedicated team. At one point I called them and told them we couldn’t finish the product and had only one week left to deliver it. They went and found the people required, free of charge. They added two to three people to brainstorm and worked long hours to deliver the solution.

      Read Full Review
    Read All Reviews
    4 of 5 Blockchain reviews are 5 stars
    $50,000 – $199,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Frontend Design for NFT Marketplace

    5.0 — An NFT marketplace hired IdeaSoft.io to build Smart Contracts on the front end. Read more
    Read 5 Reviews
    $6,000 Idea Validation $15,000 MVP Discovery $20,000 Go-to-market Product Discovery

    Discovery Phase in Blockchain Development

    Our Discovery Phase offers a comprehensive initial stage, where we collaborate with our clients to precisely define project objectives, requirements, and scope. Through thorough research and strategic planning, we establish a robust development strategy before proceeding to the implementation of your solution.
    View Packages

    Oslo, Norway

    Nedre Vollgate 3 c/o, The Factory
    Oslo, Norway 0158

    2 - 5

    See All Locations (6)
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  • UASOFTDEV Logotype

    5.0 11 reviews
    $10,000+
    $25 - $49 / hr
    50 - 249
    Oslo, Norway

    Services provided

    10% Blockchain
    10% AI Agents
    10% AI Development +7 services
    10% AR/VR Development
    10% Application Testing
    10% Cloud Consulting & SI
    10% Custom Software Development
    10% E-Commerce Development
    10% Generative AI
    10% IT Staff Augmentation

    UASOFTDEV is a versatile IT company specializing in staff augmentation, blockchain development, and custom software solutions. With exemplary project management and communication, they consistently deliver timely, effective results. Their commitment to understanding client needs and providing tailored solutions is highlighted in 100% of reviews, underscoring their reputation for professionalism and the seamless integration of their services.

    See all 11 projects
    2 of 2 reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Reviewed 2 times in the past 6 months

    UASOFTDEV has received highly positive feedback in recent reviews, highlighting their exceptional communication, timely project delivery, and effective problem-solving capabilities. Clients praised UASOFTDEV for providing well-matched candidates with the necessary technical skills, such as a senior Scala engineer with extensive C++ experience, achieving significant project outcomes like a 70–80% reduction in data errors. Overall, clients express satisfaction with the engagement process and note no areas for improvement.
    Read 2 Recent Reviews

    Average Project Cost Breakdown

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

    What Clients Have Said

    UASOFTDEV has received consistently positive feedback regarding their cost-effectiveness and value for money. Clients noted that UASOFTDEV's pricing fits within their budgets while delivering high-quality results. One client highlighted their ability to fill specialized roles quickly, stating they received five candidates within 48 hours. Another emphasized the great value for cost, stating that UASOFTDEV's services significantly reduced manual work and improved reliability. Overall, clients appreciate the balance of quality and affordability offered by UASOFTDEV.
    Read All Reviews

    More responsive than most other service providers

    UASOFTDEV is very responsive

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

    Oslo, Norway

    Tollbugata 8
    Oslo, Norway 0152

    1

    Oslo, Norway

    Fridtjof Nansens plass 4
    Oslo, Norway 0160

    1

    See All Locations (50)
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  • BitSpace Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Oslo, Norway

    Services provided

    40% Blockchain
    40% IoT Development
    20% AI Development

    BitSpace, an IoT development company, is based in Oslo, Norway. Their services include IoT development and Blockchain.

    Read more
    View Profile
  • Dev House Norway Logotype

    Not yet reviewed

    $50,000+
    Undisclosed
    50 - 249
    Oslo, Norway

    Services provided

    15% Blockchain
    20% Custom Software Development
    15% AI Development +4 services
    15% Mobile App Development
    15% Other Application Development
    15% Web Development
    5% UX/UI Design

    Software development company Dev House Norway was founded in 2025. The midsize team focuses on Custom Software Development and Artificial Intelligence.

    Read more
    View Profile

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1 Altoros
2 IdeaSoft.io
3 UASOFTDEV

List of the Top 3 Oslo Blockchain Development Companies

  1. Altoros Logotype

    Altoros

    $25,000+
    $50 - $99 / hr
    250 - 999
    Oslo, Norway

    Ability to deliver

    31.2/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    5/10 Market Presence

    Service focus

    40% Blockchain
    60% Other
    View Profile Visit Website
  2. IdeaSoft.io Logotype

    IdeaSoft.io

    $50,000+
    $50 - $99 / hr
    50 - 249
    Oslo, Norway

    Ability to deliver

    30.6/40.0
    16.2/20 Reviews
    9.8/10 Clients & Experience
    4.7/10 Market Presence

    Service focus

    80% Blockchain
    20% Other
    View Profile Visit Website
  3. UASOFTDEV Logotype

    UASOFTDEV

    $10,000+
    $25 - $49 / hr
    50 - 249
    Oslo, Norway

    Ability to deliver

    24.6/40.0
    17.6/20 Reviews
    3.6/10 Clients & Experience
    3.4/10 Market Presence

    Service focus

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

    BitSpace

    Undisclosed
    Undisclosed
    10 - 49
    Oslo, Norway

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    40% Blockchain
    60% Other
    View Profile Visit Website
  5. Dev House Norway Logotype

    Dev House Norway

    $50,000+
    Undisclosed
    50 - 249
    Oslo, Norway

    Ability to deliver

    3/40.0
    0/20 Reviews
    0/10 Clients & Experience
    3/10 Market Presence

    Service focus

    15% Blockchain
    85% Other
    View Profile Visit Website

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