Top Blockchain Companies & Developers in Vienna

Ratings Updated: April 1, 2026

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2 Leaders 8 Contenders

10 Companies

Country: Austria

City: Vienna

List of the Top Vienna Blockchain Development Companies

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Vienna, Austria

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 Great project management
Clients consistently highlight RedDuck's exceptional project management capabilities. For instance, one client noted their 'excellent project management,' emphasizing quick responses and openness to feedback. Another client praised their 'regular progress updates' and 'transparency about adjustments,' affirming that RedDuck adhered to timelines and adapted to evolving requirements. Overall, the sentiment is overwhelmingly positive, with clients expressing high satisfaction regarding communication, professionalism, and the ability to deliver on complex projects.

Cryptocurrency & Blockchain Dev for Asset Tokenization Co

5.0 Apr 21, 2025

Always quick response to questions, very open to changes and suggestions. Excellent project management.
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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. Overall, they showed a high level of professionalism and adaptability to our evolving requirements.
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5 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

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
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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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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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Vention

4.9 98 reviews

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Premier Verified

$50,000+

$50 - $99 / hr

1,000 - 9,999

Wien, Austria

Services provided

10% Blockchain

10% AI Development

10% Application Testing +7 services

10% Cloud Consulting & SI

10% Custom Software Development

10% DevOps Managed Services

10% Enterprise App Modernization

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 Hard working
The sentiment of 'hard working' is consistently highlighted in client feedback regarding iTechArt Group. Clients noted that the team actively engaged in understanding project requirements, with one stating, 'iTA worked hard to understand our exact requirements.' Another client appreciated the team's dedication, remarking, 'Their team is easy to work with, and they all continue to work hard.' Overall, the feedback reflects a strong appreciation for the diligence and commitment demonstrated by iTechArt's developers.

Automation SaaS Product Dev for Logistics SaaS Provider

5.0 Feb 7, 2024

The Vention team consistently went above and beyond the call of duty to deliver on time or even ahead of time. Just this week, we mentioned a nice-to-have tool that would make our customer's lives better. One of our engineers produced the tool and deployed it to production in a single day. They are absolute rockstars.
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Mobile App Dev for Nursing Corporation

5.0 Jan 26, 2024

Moreover, I can't say better things about Valery — he has saved our lives. I've never worked with a service provider who cares more than him. He's very invested, listens well, and goes above and beyond his scope of duty. He works as if he were a part of our team, so we feel very looked out for, which has been essential for our app's success.
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DevOps Staff Augmentation for E-Learning Platform

5.0 Dec 13, 2021

Their team is easy to work with, and they all continue to work hard. Leaders on the team manage their teams well, and have worked directly with internal developers and stakeholders when required.
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Auxiliary App Dev for Entertainment Startup

5.0 Jul 3, 2017

iTechArt seems to have access to a big group of talented and hardworking developers. They take their work quite seriously and they act like they are part of your team. They were always quite open and collaborative and we had a consistently healthy relationship.
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0 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
In the last six months, Vention has received positive feedback for their quality of engineers and responsiveness. A client highlighted their success in staffing AI engineers quickly, noting that sprint goals were consistently met, with no areas for improvement identified. The engagement has been ongoing since July 2024, with the client expressing satisfaction with the performance of the Vention team in delivering on project requirements.
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Industry Experience

Vention has demonstrated expertise across diverse industries, including Fintech, IT, Education, Marketing, and Healthcare. In Fintech, they excel in software development and team augmentation, receiving praise for responsiveness and timely deliveries. In IT, clients commend their problem-solving skills and technical proficiency, while in Education, their collaborative approach has improved project outcomes. Overall sentiment is positive, with a consistent emphasis on quality, flexibility, and effective communication across all sectors.
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Advertising & marketing Education Business services Financial services Food & Beverage Software eCommerce Healthcare Logistics & Supply Chain Hospitality & leisure Consulting Social Networking Energy & natural resources Wellness & Fitness Transportation IT Services Real estate Media Arts, entertainment & music Utilities Chemicals & Biotechnology Consumer Products Information technology Other Industry

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View projects from:

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)

This provider is fluent in 2 languages:

English

German

This provider is available in 5 time zones:

Greenwich Mean Time (GMT)

Central Standard Time (CST)

Eastern Standard Time (EST)

Pacific Standard Time (PST)

Mountain Standard Time (MST)

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Altasoft Software Solutions

4.5 1 review

$5,000+

$50 - $99 / hr

10 - 49

Wien, Austria

Services provided

10% Blockchain

20% IT Staff Augmentation

20% Mobile App Development +4 services

20% Web Development

10% AR/VR Development

10% Custom Software Development

10% E-Commerce Development

Altasoft Software Solutions is an IT outsourcing company specializing in providing skilled software developers from various countries to meet specific project needs. They are highly praised for their adept professionals and ability to adapt to new technologies, with clients expressing over 90% positive feedback. Altasoft is noted for their successful track record in meeting deadlines and delivering high-quality work in complex projects.

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Industry Experience

Altasoft Software Solutions has received positive feedback primarily within the Software and Technology industry. Clients commend their expertise in sourcing talented developers, particularly in backend technologies like .NET Core and microservices. Their ability to provide skilled professionals from diverse regions enhances project flexibility and capacity. Overall, clients appreciate Altasoft's commitment to meeting deadlines and delivering quality results, making them a strong partner for software development projects, particularly in regions with talent shortages.
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Software

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Average Project Cost Breakdown

What Clients Have Said
Clients have expressed that Altasoft Software Solutions provides good value for money, particularly in sourcing skilled developers from diverse countries to meet project needs. One client highlighted their ability to deliver mid to senior-level developers who are eager to learn and adapt, enhancing project outcomes. The long-term partnership indicates satisfaction with pricing flexibility based on budget requirements. Overall, sentiment regarding cost-effectiveness and value is positive, with clients appreciating the quality of talent and service provided.
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Wien, Austria

Johann Strauss Gasse 3-15
Wien, Austria 1040
2 - 5

+436766112310

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THE SWARM DEVELOPMENT GmbH

Not yet reviewed

$5,000+

$100 - $149 / hr

10 - 49

Wien, Austria

Services provided

20% Blockchain

20% Custom Software Development

15% E-Commerce Development +7 services

10% AR/VR Development

10% Web Design

5% Cybersecurity

5% IT Strategy Consulting

5% Mobile App Development

5% UX/UI Design

5% Web Development

THE SWARM DEVELOPMENT GmbH is a software development company in Wien, Austria. They specialize in Custom Software Development and Blockchain.
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Cryptix AG

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Wien, Austria

Services provided

25% Blockchain

25% Cloud Consulting & SI

25% Cybersecurity +1 service

25% IT Strategy Consulting

Cryptix AG, an IT strategy consulting company, offers IT strategy consulting and cloud consulting & SI. The agency is headquartered in Zug, Switzerland and Wien, Austria.
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Wien, Austria

1 Opernring
Wien, Austria 1010
16 - 20

+43 1 2089895

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CryptIT GmbH

Not yet reviewed

$5,000+

$150 - $199 / hr

10 - 49

Wien, Austria

Services provided

20% Blockchain

35% Enterprise App Modernization

20% AI Agents +2 services

15% Custom Software Development

10% AI Consulting

CryptIT GmbH, an Enterprise App Modernization company, is headquartered in Wien, Austria. They provide Enterprise App Modernization and Blockchain and were founded in 2021.
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OG Technologies EU

Not yet reviewed

$25,000+

$50 - $99 / hr

2 - 9

Wien, Austria

Services provided

10% Blockchain

12% IT Strategy Consulting

10% AI Development +7 services

10% API Development

10% Cloud Consulting & SI

10% Custom Software Development

10% Cybersecurity

10% Enterprise App Modernization

10% Web Development

8% IT Managed Services

OG Technologies EU is an IT strategy consulting company. The Wien, Austria-based agency was founded in 2021. Their services include IT strategy consulting and cloud consulting & SI.
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Alpine Blockchain

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Brunn am Gebirge, Austria

Services provided

30% Blockchain

30% Blockchain Marketing

20% Application Testing +1 service

20% Cybersecurity

Alpine Blockchain is a Blockchain company. The Brunn am Gebirge, Austria-based team provides Blockchain and Blockchain Marketing.
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OpenValue

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Wien, Austria

Services provided

20% Blockchain

60% Custom Software Development

20% AI Development

OpenValue is a software development firm. The Wien, Austria-based team offers Custom Software Development and Artificial Intelligence.
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Parsition GmbH

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Wien, Austria

Services provided

10% Blockchain

30% Mobile App Development

20% Web Development +8 services

5% Custom Software Development

5% Digital Strategy

5% E-Commerce Development

5% Graphic Design

5% Social Media Marketing

5% UX/UI Design

5% Video Production

5% Web Design

Parsition GmbH is a mobile application development company. Their small team is headquartered in Wien, Austria. Their team specializes in Mobile App Development and Web Development.
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A.R. Merkeleon GmbH

Not yet reviewed

$5,000+

$50 - $99 / hr

50 - 249

Pöttelsdorf, Austria

Services provided

30% Blockchain

20% Custom Software Development

20% E-Commerce Development +4 services

10% Other Application Development

10% Web Development

5% IT Managed Services

5% Mobile App Development

A.R. Merkeleon GmbH, a Blockchain company, provide Blockchain and Custom Software Development. They were launched in 2009.
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Ability to deliver

Focus

Proven

Market Leaders

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Clutch Leaders Matrix

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

1 Vention

2 Altasoft Software Solutions

A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top 2 Vienna Blockchain Development Companies

Vention

$50,000+

$50 - $99 / hr

1,000 - 9,999

Wien, Austria

Ability to deliver

39.8/40.0

20/20 Reviews

10/10 Clients & Experience

9.8/10 Market Presence

Service focus

10% Blockchain

90% Other

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Altasoft Software Solutions

$5,000+

$50 - $99 / hr

10 - 49

Wien, Austria

Ability to deliver

20.8/40.0

14.6/20 Reviews

1.7/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% Blockchain

90% Other

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THE SWARM DEVELOPMENT GmbH

$5,000+

$100 - $149 / hr

10 - 49

Wien, Austria

Ability to deliver

10.5/40.0

0/20 Reviews

5.9/10 Clients & Experience

4.6/10 Market Presence

Service focus

20% Blockchain

80% Other

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Cryptix AG

Undisclosed

Undisclosed

10 - 49

Wien, Austria

Ability to deliver

5.5/40.0

0/20 Reviews

0/10 Clients & Experience

5.5/10 Market Presence

Service focus

25% Blockchain

75% Other

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CryptIT GmbH

$5,000+

$150 - $199 / hr

10 - 49

Wien, Austria

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

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OG Technologies EU

$25,000+

$50 - $99 / hr

2 - 9

Wien, Austria

Ability to deliver

4.6/40.0

0/20 Reviews

0/10 Clients & Experience

4.6/10 Market Presence

Service focus

10% Blockchain

90% Other

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Alpine Blockchain

Undisclosed

Undisclosed

2 - 9

Brunn am Gebirge, Austria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

30% Blockchain

70% Other

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OpenValue

Undisclosed

Undisclosed

50 - 249

Wien, Austria

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

20% Blockchain

80% Other

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Parsition GmbH

Undisclosed

Undisclosed

10 - 49

Wien, Austria

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

10% Blockchain

90% Other

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A.R. Merkeleon GmbH

$5,000+

$50 - $99 / hr

50 - 249

Pöttelsdorf, Austria

Ability to deliver

6.5/40.0

0/20 Reviews

0/10 Clients & Experience

6.5/10 Market Presence

Service focus

30% Blockchain

70% Other

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Top Blockchain Companies & Developers in Vienna

List of the Top Vienna Blockchain Development Companies

Reviews mention Great project management

Cryptocurrency & Blockchain Dev for Asset Tokenization Co

Blockchain Development for FinTech Company

Blockchain Development for FinTech Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Hard working

Automation SaaS Product Dev for Logistics SaaS Provider

Mobile App Dev for Nursing Corporation

DevOps Staff Augmentation for E-Learning Platform

Auxiliary App Dev for Entertainment Startup

Reviewed 1 time in the past 6 months

Industry Experience

Select Industry to see insights

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top 2 Vienna Blockchain Development Companies

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