Top Blockchain Companies & Developers in Oslo

Ratings Updated: January 21, 2026

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Featured

What are Featured Providers?
Vention

4.9 98 reviews
Premier Verified

$25,000+

$50 - $99 / hr

1,000 - 9,999

Serves Oslo, Norway

Services provided

10% Blockchain

30% Custom Software Development

10% AI Agents +5 services

10% AI Development

10% AR/VR Development

10% IT Staff Augmentation

10% Mobile App Development

10% Web Development

Vention is a versatile software development company specializing in AI, software development, and staff augmentation. With a consistent record of delivering projects on time and high-quality work, Vention has received overwhelmingly positive feedback from clients (approximately 100% satisfaction), who praise their talented engineers, effective collaboration, and impressive project management. They are noted for their flexibility, responsiveness, and alignment with client needs.

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Reviews mention Transparent
Clients consistently commend iTechArt Group for their transparency throughout the project lifecycle. One CEO noted their 'excellent' project management and clear communication, stating, 'we felt they were part of our staff.' Another client highlighted their 'accurate estimates up front' and proactive approach to challenges, ensuring they were never left in the dark. Overall, feedback reflects a strong sentiment of trust and clarity in the company's dealings, reinforcing their commitment to transparency in client relationships.

Web3 Custom Software Development for Software Company

5.0 Apr 19, 2023

We had close and clear communication with iTechArt Group — we felt they were part of our staff. Be transparent and straightforward about your project’s requirements, and iTechArt Group will perform a great job and give you the best possible delivery.
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Data Analytics Dev for Analytics Company

5.0 Jan 17, 2019

The iTechArt Group team was very transparent, providing accurate estimates up front. If there was a problem, they alerted us days in advance and promptly addressed it. We never felt like we were in the dark.
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MVP Software Dev for Call Startup

5.0 Sep 24, 2018

They were transparent with billing. Everything was top notch, from their professionalism and customer service to their billing structure. If I ever use a service like this again, they will be my first and only call.
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0 of 2 reviews are 5 stars

Unknown avg. project cost

Reviewed 2 times in the past 6 months
In the past six months, client feedback for Vention has been overwhelmingly positive, highlighting their high-quality engineering talent and responsive account management. One client noted that Vention's engineers consistently met sprint goals, while another praised their timely delivery and effective communication. Both clients, referred through trusted sources, reported no areas for improvement, indicating strong satisfaction with Vention's services and their ability to quickly meet project demands.
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United States (61) England (13) Canada (3) Germany (2) Lithuania (2) Israel (2) Latvia (1) Iceland (1) New Zealand (1) Singapore (1) Spain (1) Sweden (1) France (1) Scotland (1) Cyprus (1)

Berlin, Germany

Kemperplatz 1
Berlin, Germany 10785
2 - 5

+493083792687

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Innowise

4.9 72 reviews
Premier Verified

$10,000+

$50 - $99 / hr

1,000 - 9,999

Serves Oslo, Norway

Services provided

10% Blockchain

10% AI Development

10% AR/VR Development +7 services

10% Cloud Consulting & SI

10% Custom Software Development

10% E-Commerce Development

10% IT Staff Augmentation

10% Mobile App Development

10% Robotics Process Automation

10% Web Development

Innowise 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.

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Industry Experience

Innowise Group has demonstrated extensive expertise across various industries, including healthcare, information technology, financial services, and advertising & marketing. Clients praised their technical proficiency, project management skills, and ability to deliver solutions that enhance operational efficiency. Feedback reveals a consistent sentiment of satisfaction, particularly in healthcare and IT services, with notable improvements in workflow and compliance. Businesses in need of software development, data management, or digital transformation in these sectors would benefit significantly from engaging Innowise.
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Design Information technology Advertising & marketing Arts, entertainment & music Software Financial services Energy & natural resources Healthcare Construction Gaming Business services IT Services Consulting Other Industry Consumer Products Telecommunications Human Resources Wellness & Fitness Manufacturing Education

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Average Project Cost Breakdown

$10,000 to $49,000 (24) $50,000 to $199,999 (17) $200,000 to $999,999 (10) Less than $10,000 (1)

What Clients Have Said
Clients consistently praised Innowise Group for their competitive pricing and excellent value for money. Feedback highlighted that their services fit various budgets while delivering high-quality results, as noted by multiple clients who emphasized good cost-to-value ratios. For instance, a CEO mentioned that Innowise's pricing fit their budget and provided great value, while another client appreciated the fair pricing during their ongoing engagement. Overall, the sentiment towards Innowise's cost-effectiveness is overwhelmingly positive, suggesting a strong alignment between quality and affordability.
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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)

Berlin, Germany

63 Kronenstraße
Berlin, Germany 10117
16 - 20

+49 30 520 158 80

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S-PRO

4.9 46 reviews
Verified

$25,000+

$25 - $49 / hr

50 - 249

Serves Oslo, Norway

Services provided

10% Blockchain

35% Web Development

25% AI Development +4 services

15% Mobile App Development

10% Custom Software Development

3% AI Consulting

2% IT Strategy Consulting

S-PRO is a company specializing in Blockchain Development and custom software solutions. Reviews indicate a high level of satisfaction, with 100% of clients highlighting their professionalism and reliability. Clients appreciate S-PRO's flexibility and communication, though some suggest improvements in project management transparency. Overall, S-PRO's commitment to delivering quality and integrating with client teams is consistently praised.

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Reviews mention Unique expertise
The sentiment regarding S-PRO's unique expertise is overwhelmingly positive, highlighted by clients' appreciation for their tailored solutions and technical skills. One client noted S-PRO's ability to adapt to specific business needs and deliver a customized platform, emphasizing their creative problem-solving. Another client praised the developers' skills and timely delivery of functionalities. Overall, S-PRO's expertise in integrating complex systems and commitment to customer satisfaction were key factors in their success.

Web Development & Management for Physical Education Company

4.5 Apr 21, 2021

They plan and deliver the functionalities we need on time. Plus, we're impressed by the skills of their developers.
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Custom Software Solution for Digital Marketing Company

5.0 Nov 17, 2024

What stood out most about S-PRO was their ability to adapt to our specific needs and provide tailored solutions. They didn't just take an off-the-shelf approach but worked closely with us to fully understand our business and deliver a platform that addressed our challenges. Their team's technical expertise and creative problem-solving skills were also impressive, especially when it came to integrating complex systems.
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Industry Experience

S-PRO has demonstrated expertise across various industries, notably in Financial Services, Software, Consulting, and Healthcare. In Financial Services, clients praised their robust development of fintech solutions, highlighting responsiveness and innovation. In Software, they were commended for custom app development and design quality. Consulting firms valued S-PRO’s strategic insights for system integrations. Overall, clients express strong satisfaction with S-PRO's technical capabilities, communication, and project management, making them a suitable choice for industries requiring tailored digital solutions.
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Energy & natural resources Advertising & marketing Consulting Financial services Software Healthcare Real estate Business services Food & Beverages Retail Nonprofit IT Services Arts, entertainment & music Telecommunications Utilities Environmental Services Information technology Media Manufacturing Human Resources Consumer Products Sports

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Average Project Cost Breakdown

$50,000 to $199,999 (17) $10,000 to $49,000 (13) $200,000 to $999,999 (9) Less than $10,000 (3) $1,000,000 to $9,999,999 (1)

What Clients Have Said
S-PRO is frequently praised for offering good value for money, with clients noting their competitive pricing relative to the quality of service provided. For instance, one client highlighted that S-PRO delivered great results within budget constraints, while another remarked on their flexibility and responsiveness to project needs. Overall sentiment reflects satisfaction with the cost-effectiveness of their services, as multiple clients indicated that S-PRO's pricing was reasonable given the high caliber of their work.
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Łódź, Poland

70 Zachodnia
Łódź, Poland 90-403
31 - 40

+48 791 293 483

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Altoros

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 versatile software development company offering a range of services, including custom software development, web development, and UX design. Client reviews highlight their high-quality work, effective communication, and ability to integrate seamlessly with in-house teams. Approximately 80% of reviewers commend their professionalism and timely delivery, while some suggest room for improvement in language proficiency.

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Reviews mention Honest
Clients consistently highlight Altoros' honesty and transparency throughout their collaboration. One client noted, 'Altoros has not let us down,' emphasizing their trustworthiness over four years. Another client praised their 'open and honest communication,' which fostered a collaborative environment for reviewing project functions. Overall, the sentiment is highly positive, with clients appreciating the company's commitment to delivering high-quality work while maintaining clear and sincere communication.

Custom Software Dev for Software Development Company

5.0 Nov 3, 2022

Altoros' management and individual contributors (engineers, architects, etc.) manage their transparency with tools and excellent Business English. At times it felt like we were working with much more expensive consultancies and not extended programming teams. We used standard means of communication, but where they overdelivered was with honesty, simplicity and care. You do feel like you are working with human-beings and not algorithms that generate reports.
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Software & Mobile App Dev for Digital Solutions Company

5.0 May 5, 2021

Readiness to find out new and cost-effective way to develop the final product. Open and honest communication throughout the project game us room to review different UI functions on the service. While the quality of the work was great, they could have been more diligent about documentation and more accurate estimations of the work packages.
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Industry Experience

Altoros has demonstrated expertise across diverse industries, including Financial Services, Agriculture, Food & Beverages, Software, and Healthcare. Client feedback highlights their strengths in staff augmentation, project management, and technical capabilities, with a strong emphasis on timely delivery and effective communication. Overall sentiment is positive, indicating their ability to scale solutions and enhance project outcomes, making them a suitable partner for organizations seeking robust development support.
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Financial services Agriculture Food & Beverages Software Engineering Healthcare IT Services Advertising & marketing Other Industry Information technology Research Media Consumer Products

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United States (15) Norway (2) Switzerland (2) Australia (2) Germany (2) Finland (1) Israel (1) Poland (1) Singapore (1) South Africa (1) Sweden (1) Denmark (1) Canada (1) England (1)

Oslo, Norway

2 Tordenskiolds gate
Oslo, Norway 0160
16 - 20

+47 21 92 93 00

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IdeaSoft.io

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 is a Blockchain Development company specializing in smart contract development, decentralized application development, and cryptocurrency solutions. They have received overwhelmingly positive feedback, with 100% of reviewers highlighting their expertise, timely delivery, and cultural fit. Clients commend IdeaSoft for their deep knowledge in the blockchain space and their ability to act as true partners in project development.

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Reviews mention High-quality work
Overall, clients consistently praise IdeaSoft for their high-quality work and expertise. One client noted their 'excellent engineering partner' skills, while another highlighted the 'high professionalism' of the engineers and their ability to deliver complex modules on time. Feedback emphasizes IdeaSoft's commitment to quality, with one reviewer stating they were 'absolutely satisfied' with the result and another appreciating the 'great quality of deliverables' that facilitated a smooth project progression. The sentiment reflects strong confidence in IdeaSoft's capabilities.

Custom Software Development for Real Estate Company

5.0 Dec 1, 2021

Excellent engineering partner and that we're super pleased with the skillset. No everything was excellent and quality experience.
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Custom Software Dev for Cybersecurity Consulting Firm

5.0 Nov 17, 2021

The quality of work was great.
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Custom Software Development for Atlassian Solutions Provider

5.0 May 25, 2021

It's always good to work with an experienced vendor who can bring something new to your project, something that you haven't even thought about. You can always do something better, but they already provide a high quality of work.
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DeFi Wallet Development for Software Fintech Company

5.0 Apr 22, 2021

In general, we are satisfied with the quality of the delivered product. We were concerned about security, which is so important for any DeFi project, and the team did a great job.
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AI & Machine Learning Analytics Platform for Tech Startup

5.0 Aug 31, 2020

I absolutely satisfied with the result. Also, IdeaSoft has very experienced developers, so we are confident in the quality of the delivered product.
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4 of 5 Blockchain reviews are 5 stars

2 new reviews for Blockchain in past 6 months

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Proof of Concept Development for Financial Services Company
5.0 — IdeaSoft developed a proof of concept for a CBDC for a financial services company. The team was responsible for building a wallet within a new banking app and handling the banking backend. Read more
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Average Project Cost Breakdown

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

What Clients Have Said
Client feedback regarding IdeaSoft.io indicates a positive sentiment towards the company's cost and value for money. Multiple reviewers highlighted that IdeaSoft's pricing was competitive and aligned well with their budgets. For instance, a COO noted 'pricing fit our budget' while another client appreciated the 'good value for cost.' Overall, clients expressed satisfaction with the quality of deliverables received relative to the investment made, reinforcing the perception of IdeaSoft as a cost-effective partner.
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Ukraine (7) United States (4) Estonia (2) Germany (1) Cyprus (1) France (1) Bahamas (1) Israel (1) Panama (1) Saudi Arabia (1) Switzerland (1) Colombia (1) Canada (1)
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Featured

What are Featured Providers?
RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Oslo, Norway

Services provided

100% Blockchain

RedDuck 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.

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Reviews mention Transparent
Clients have consistently praised RedDuck for their transparency throughout the project lifecycle. One CEO noted that RedDuck provided regular progress updates and was transparent about any necessary adjustments. Clear and responsive communication was highlighted, with feedback being quickly implemented. The overall sentiment reflects a strong appreciation for RedDuck's professionalism and adaptability, establishing them as a reliable development partner that prioritizes client engagement and satisfaction.

Blockchain Development for FinTech Company

5.0 Apr 23, 2025

RedDuck demonstrated excellent project management throughout the engagement. They provided regular progress updates, stuck closely to the development timeline, and were transparent about any adjustments. Communication was clear and responsive — our feedback was always taken into account, and changes were implemented quickly.
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Industry Experience

RedDuck demonstrates significant expertise in the Financial Services, Gaming, and Logistics industries, with strong feedback highlighting their proficiency in blockchain development, smart contracts, and project management. Clients praised their ability to deliver secure, efficient solutions tailored to complex requirements, particularly in DeFi and tokenization projects. Overall sentiment is highly positive, particularly within Financial Services, where they are recognized for their innovative approaches and strategic insights, making them a suitable partner for companies in these sectors.
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Financial services Other Industry Logistics & Supply Chain Gaming

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

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.
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Top Blockchain Companies & Developers in Oslo

List of the Top Oslo Blockchain Development Companies

Reviews mention Transparent

Web3 Custom Software Development for Software Company

Data Analytics Dev for Analytics Company

MVP Software Dev for Call Startup

Reviewed 2 times in the past 6 months

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Reviews mention Unique expertise

Web Development & Management for Physical Education Company

Custom Software Solution for Digital Marketing Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Honest

Custom Software Dev for Software Development Company

Software & Mobile App Dev for Digital Solutions Company

Industry Experience

Select Industry to see insights

Reviews mention High-quality work

Custom Software Development for Real Estate Company

Custom Software Dev for Cybersecurity Consulting Firm

Custom Software Development for Atlassian Solutions Provider

DeFi Wallet Development for Software Fintech Company

AI & Machine Learning Analytics Platform for Tech Startup

Proof of Concept Development for Financial Services Company

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Transparent

Blockchain Development for FinTech Company

Industry Experience

Select Industry to see insights

RedDuck is very responsive

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List of the Top 2 Oslo Blockchain Development Companies

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