Making a short list of the best blockchain app developers. It would include their descriptions, services, locations, and top clients. It can give businesses key insights. They are useful for firms that want to make blockchain solutions.

Here is the list of Blockchain App Development Companies

1. ConsenSys

ConsenSys is a top blockchain company. It is known for its Ethereum software and tools. ConsenSys focuses on developer tools and enterprise solutions. It drives global blockchain adoption.

• Services: Ethereum product development, DApp development, enterprise blockchain solutions, blockchain consulting.
• Location: New York, USA.
• Top Clients: Microsoft, JPMorgan Chase, UBS.

2. IBM Blockchain

IBM Blockchain is a pioneer in enterprise blockchain solutions. It uses deep technology expertise. It helps businesses in many sectors implement blockchain securely and effectively.

• Services: Blockchain platform, blockchain consulting, blockchain services in supply chain, identity solutions.
• Location: Armonk, New York, USA.
• Top Clients: Walmart, Maersk, Golden State Foods.

3. Blockchain App Factory

Blockchain App Factory is an innovative development company. They offer high-end blockchain solutions. These include custom blockchain-based applications for specific business needs.

• Services: Custom blockchain software development, ICO services, cryptocurrency development, smart contract development.
• Location: Chennai, India.
• Top Clients: Startups and enterprises in finance, healthcare, and real estate sectors.

4. Blockchangers

Blockchangers is a Norwegian company excelling in blockchain consultancy and development. It helps clients understand and use blockchain technology for innovation.

• Services: Blockchain development, DLT solutions, blockchain workshops, ICO consulting.
• Location: Oslo, Norway.
• Top Clients: DNB, Skatteetaten (Norwegian Tax Administration).

5. LeewayHertz

LeewayHertz has over a decade of building digital products. They are at the forefront of blockchain technology. They are developing scalable and strong applications.

• Services: Blockchain development, AI integration, IoT blockchain solutions, cloud services.
• Location: San Francisco, California, USA.
• Top Clients: Siemens, Hershey’s, ESPN.

6. Altoros

Altoros is a pro services company. It provides tech consulting, blockchain development, and training to global groups.

• Services: Blockchain development services, cloud automation, artificial intelligence, professional training and consulting.
• Location: Sunnyvale, California, USA.
• Top Clients: Sony, Toyota, DENSO.

7. ChainSafe Systems

ChainSafe Systems is a firm that focuses on Ethereum. It develops infrastructure for the decentralized web, including Ethereum 2.0.

• Services: Blockchain infrastructure development, Web3 development, Ethereum 2.0 client development.
• Location: Toronto, Canada.
• Top Clients: Ethereum Foundation, Web3 Foundation, Protocol Labs.

8. OpenLedger

OpenLedger develops custom blockchain solutions for startups and enterprises. Its goal is to unlock the potential of decentralized technology.

• Services: Custom blockchain development, decentralized exchange development, ICO/STO development, and marketing services.
• Location: Copenhagen, Denmark.
• Top Clients: Viewly, Karma, Obsidian.

9. HashCash Consultants

HashCash is a global blockchain company. It offers new products and services. They are for global enterprises to meet their blockchain needs.

• Services: Blockchain development, cryptocurrency exchange solutions, ICO services, blockchain AI solutions.
• Location: Palo Alto, California, USA.
• Top Clients: Global banks, currency exchanges, and financial institutions.

10. BitFury

BitFury is one of the largest full-service blockchain technology companies. It delivers the software and hardware. Businesses, governments, and people need them to move assets safely across the blockchain.

• Services: Blockchain infrastructure, hardware for mining, blockchain applications.
• Location: Amsterdam, Netherlands.
• Top Clients: Governments and large corporations in over 15 countries.

11. Accenture

Accenture offers many blockchain services. They aim to help businesses use blockchain in operations, supply chain, and finance.

• Services: Blockchain consulting, supply chain solutions, digital identity services, DLT solutions.
• Location: Dublin, Ireland.
• Top Clients: Microsoft, Disney, BMW.

12. Cognizant

Cognizant’s blockchain services help organizations use blockchain to improve efficiency and bring transparency to operations in many industries.

• Services: Blockchain consulting, blockchain technology solutions, smart contracts, and blockchain security.
• Location: Teaneck, New Jersey, USA.
• Top Clients: Pfizer, Barclays, MetLife.

13. Deloitte

Deloitte offers blockchain services. These services range from brainstorming to running blockchain solutions.

• Services: Blockchain consulting, enterprise blockchain solutions, digital assets, and currencies, and industry-specific blockchain applications.
• Location: New York, USA.
• Top Clients: HSBC, LVMH, Moët Hennessy.

14. BCG Platinion

BCG Platinion is a division of Boston Consulting Group. It offers strong blockchain solutions. These are designed to solve complex business challenges and drive digital innovation.

• Services: Blockchain assessment, development and deployment, management consulting in blockchain implementation.
• Location: New York, USA.
• Top Clients: Allianz, Volkswagen, Qualcomm.

15. Dragonchain

Dragonchain is innovative. It is a leader in the blockchain space. It focuses on business-ready solutions in security, scalability, and adaptability.

• Services: Blockchain platform services, enterprise blockchain solutions, and ICO consulting.
• Location: Bellevue, Washington, USA.
• Top Clients: Disney, M2030, Beaxy.

16. Tech Mahindra

Tech Mahindra offers blockchain solutions. They revamp business processes by adding transparency, security, and traceability.

• Services: Blockchain consulting, solution design and implementation, blockchain for telecommunications and manufacturing.
• Location: Pune, India.
• Top Clients: IBM, AT&T, Cisco.

17. Infosys

Infosys is a global leader in next-generation digital services and consulting. It includes blockchain solutions that help enterprises with digital transformation.

• Services: Blockchain consulting, development and implementation, supply chain solutions, and finance transformation.
• Location: Bangalore, India.
• Top Clients: Daimler AG, Roland-Garros, Ricoh.

18. PwC

PricewaterhouseCoopers offers advanced blockchain solutions. They’ve aimed to revolutionize industries. They will do this by increasing trust. They will also increase the transparency and traceability of digital info.

• Services: Blockchain consulting, strategy, risk services, regulatory compliance, and digital transformation.
• Location: London, UK.
• Top Clients: Shire, Dow Chemical, United Technologies.

19. Synechron

Synechron provides new blockchain applications. They help global financial and tech firms rethink their processes.

• Services: Blockchain labs, blockchain accelerators, enterprise blockchain solutions.
• Location: New York, USA.
• Top Clients: Citibank, Goldman Sachs, State Street.

20. Mphasis

Mphasis on applying next-generation technology to help enterprises transform businesses globally. Its blockchain solutions aim to make financial services and supply chains more secure. They also aim to make them more efficient.

• Services: Blockchain-based banking solutions, smart contracts, custom blockchain development.
• Location: Bangalore, India.
• Top Clients: JPMC, Loyds, Royal Bank of Canada.

21. Chainyard

Chainyard is a technology consulting company focused on blockchain business networks. They’ve specialized in deploying and integrating blockchain solutions. These solutions streamline business and make customers happier.

• Services: Blockchain consulting, network development and integration, smart contract development, blockchain as a service.
• Location: Morrisville, North Carolina, USA.
• Top Clients: Honeywell, Lenovo, IBM.

22. TheBlockBox

TheBlockBox designs and develops blockchain applications for many industries. Its platforms ensure high performance and data security.

• Services: Full-stack blockchain development, smart contracts, security audits, dApp development.
• Location: San Francisco, California, USA.
• Top Clients: Various startups and enterprises in fintech, healthcare, and supply chain management.

23. Deqode

Deqode specializes in solving complex business problems through blockchain technology. They offer customized blockchain solutions that ensure transparency, efficiency, and security.

• Services: Blockchain development, dApp development, enterprise blockchain solutions, ICO services.
• Location: New York, USA.
• Top Clients: Lannister, Peerplays, TokenDeck.

24. Antier Solutions

Antier Solutions leverages its deep expertise. It builds scalable, enterprise-grade blockchain solutions that enable digital transformation.

• Services: Blockchain development, ICO development, wallet development, exchange platforms.
• Location: Chandigarh, India.
• Top Clients: Cryptobank, Goldario, Fantasy Sports.

25. Oodles Blockchain

Oodles Blockchain is known for its innovative approach. It provides scalable blockchain solutions. They address industrial challenges and ensure strong security.

• Services: Blockchain application development, blockchain maintenance and upgrade, smart contract development, blockchain consulting.
• Location: Gurgaon, India.
• Top Clients: They are various small to medium-sized enterprises. They are in finance, real estate, and entertainment.

This list gives a snapshot of top blockchain app development companies. It highlights their services, where they operate, and their notable clients. They cater to industries from finance to government.