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Top Blockchain Companies & Developers in Oslo

Ratings Updated: September 6, 2026
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2 Leaders 2 Contenders

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4 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
    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 projects from:

    Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)
    View Profile Visit Website
    RedDuck Logotype

    RedDuck

    5.0 15 reviews
    Verified
    $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 Distributed Ledger Technology, Smart Contract Development, and Decentralized Application (DApp) Development. Reviews highlight their strong project management skills and responsiveness, with 100% positive feedback on their ability to meet deadlines and adapt to client needs. Clients frequently commend their technical precision and strategic approach, ensuring high-quality deliverables.

    See all 15 projects
    6 of 6 Blockchain reviews are 5 stars
    1 new review 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 6 Reviews

    Industry Experience

    RedDuck has garnered positive feedback across multiple industries, particularly in Financial Services and Telecommunications. Clients commend their expertise in blockchain development, UI/UX design, and project management, highlighting successful implementations in decentralized finance and API solutions. The Gaming and Information Technology sectors also recognize their strong coding skills and adaptability. Overall, RedDuck is well-regarded for delivering timely, high-quality solutions, making them a strong candidate for projects within these sectors.

    Read All Reviews

    Select Industry to see insights

    Logistics & Supply Chain Gaming Other Industry Financial services Information technology

    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:

    Switzerland (2) Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)
    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

    Reviews mention Hard working

    Clients have expressed high praise for Altoros's work ethic, describing their engineers as consistently skilled, hard-working, productive, and reliable. One client noted that Altoros engineers actively seek better methods to achieve project goals, demonstrating a commitment beyond mere compliance with specifications. This dedication has fostered a sense of partnership, with clients feeling that Altoros is a vital part of their team. Overall, the sentiment reflects a strong appreciation for their hard work and proactive approach.
    • Dev & Maintenance for Consumer Observation Company
      5.0 Jun 22, 2020

      Altoros engineers are consistently skilled, hard-working, productive and reliable. They consistently look for better ways to achieve the end-result we seek rather than just sticking to the spec and design we provide. We feel our Altoros engineers are a vital part of our team.

      Read Full Review
    Read All Reviews

    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

    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

    Clients in Oslo commend Altoros for their skilled, self-driven developers and clear communication. They appreciate their ability to handle complex projects, provide valuable recommendations, and ensure smooth collaboration across diverse mobile development initiatives.
    Read Local Reviews
    View Profile
  • IdeaSoft.io Logotype

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

    Services provided

    75% Blockchain
    5% AI Development
    5% Custom Software Development +3 services
    5% Mobile App Development
    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 Proactive

    Clients consistently praised IdeaSoft for their proactive approach throughout the project lifecycle. One client noted, "The project manager was always in touch and promptly answered questions," reflecting their commitment to communication and support. Another highlighted that IdeaSoft's team quickly adapted to changing requirements and maintained a positive team spirit. Overall, the sentiment regarding their proactivity is highly positive, with clients feeling supported and engaged throughout their projects.
    • AI & Machine Learning Analytics Platform for Tech Startup
      5.0 Aug 31, 2020

      The project manager kept us informed of all updates. I had the opportunity to communicate with the developers themselves and take a direct part in the process. I knew what kind of application architecture we needed, and was pleasantly surprised at how quickly the team took the right direction.

      Read Full Review
    Read All Reviews

    Industry Experience

    IdeaSoft.io has received positive feedback across multiple industries, particularly in financial services, where they demonstrated strong expertise in blockchain and fintech projects. Clients praised their high professionalism, effective communication, and on-time delivery. Their work in arts, entertainment, and other sectors highlighted their adaptability and innovation, further emphasizing their strengths in web3 development. Overall, IdeaSoft.io is well-suited for projects in finance, blockchain, and digital solutions, making them a reliable partner for various industry needs.

    Read All Reviews

    Select Industry to see insights

    Financial services Nonprofit Arts, entertainment & music Consulting Real estate Telecommunications Other Industry IT Services Software Information technology Transportation Business services Advertising & marketing Engineering
    $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)
    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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  • 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

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

1 Altoros
2 IdeaSoft.io

List of the Top 2 Oslo Blockchain Development Companies

  1. Altoros Logotype

    Altoros

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

    Ability to deliver

    35.7/40.0
    16.2/20 Reviews
    10/10 Clients & Experience
    9.5/10 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

    32/40.0
    16.2/20 Reviews
    9.8/10 Clients & Experience
    6.1/10 Market Presence

    Service focus

    75% Blockchain
    25% Other
    View Profile Visit Website
  3. Dev House Norway Logotype

    Dev House Norway

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

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    15% Blockchain
    85% 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

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