Find blockchain development companies that build secure, scalable solutions for real business use. Choose from vetted experts in smart contracts, dApps, and enterprise blockchain integration.Â
Best Blockchain Development Agencies
5 Companies-Rankings updated: September 04, 2026
DesignRush assesses blockchain development firms for their technical expertise and verified client experiences to help you make better decisions. Some placements might be paid.
IIH Global offers innovative web, software, and mobile app development services tailored to your needs. As a trusted UK-based agency, we deliver reliable, scalable, and client-focused solutions to transform ideas into powerful digital products that drive growth, efficiency, and success...
Top Services:
AI Development
Web Design
Software Development
Web Development
eCommerce Development
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Location
Rickmansworth, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$20/hr
Minimal Budget
Under $1,000
Portfolios Count
17 Projects Listed
IIH Global Services
AI Development
Web Design
Software Development
Web Development
eCommerce Development
Mobile App Development
CRM Consulting
WordPress Website Design
Staff Augmentation
Blockchain
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
FLOORS TO WALLS
MORENA MORNA
CHARITY ACCELERATOR
MODELSINC
EMPR
MARIA ELLIOTT
SCAFFOLDINGHIRE
STYLE N SMILE
ARRON JAMES
BlackBurd
Data sourced from the agency's DesignRush profile
IIH Global Reviews & Testimonials
Marcus Payams
Owner at Nos Apps LLC
5.0★
Mobile App Development Review from Marcus Payams
Bhavin, Lincy, Aastha, and their team helped tremendously in developing the mobile app, integrating AI into the app, and assisting in gaining access to API plugins for Hotel + Flight listings. 100% recommend!
Michael Gonzales
Founder at Yumy Brands LLC
5.0★
Startup Review from Michael Gonzales
We would not have been able to develop our fan platform without the incredible talent of IIH Global. The development team is the best in the industry.
Omar Atamny
CEO at Lule Technologies
5.0★
Web Development Review from Omar Atamny
Very professional and independent, I can rely on them to do the work without much supervision, they put their own thinking and effort to the process which makes my work and life much easier, I highly recommend IIH Global.
Reviews verified by DesignRush and sourced from the agency's profile
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Dive into Apptonic.io! We specialize in crafting tailored solutions for Android, iOS, Wearables, Cross-Platform projects, and even Game Development. Whether you're dreaming up the next big app or need a sleek solution for your business, Apptonic.io is here to turn your ideas into reality...
Top Services:
Mobile App Development
Software Development
AI Development
Wearables
IoT
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Location
Carolina Beach, North Carolina
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
Apptonic.io Services
Mobile App Development
Software Development
AI Development
Wearables
IoT
Software Testing
Blockchain
VR/AR
Staff Augmentation
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Virtu Hub
Nomad's Nest
Fit Fusion
Mind Meld
Well Wave
Tail Tales
Event Sync
Learn Leap
Eco Trail
Data sourced from the agency's DesignRush profile
Apptonic.io Reviews & Testimonials
Eobard Shaun
Review from Google
5.0★
Eobard Shaun's Review Sourced from Google
I worked with Apptonic to develop my app, and it was a positive experience overall. The team was friendly and easy to talk to, and they helped shape my idea into something better. There were a few delays, and I had to follow up a couple of times, but they always responded quickly and fixed any issues. In the end, the app turned out great and worked as I wanted. They did a good job, and I’d recommend them with a little patience for timelines.
Reviews verified by DesignRush and sourced from the agency's profile
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Our mission is simple to help businesses grow online with powerful websites, creative designs, and result-driven digital solutions...
Top Services:
WordPress Website Design
Web Development
eCommerce Development
Web Design
UI/UX Design
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Location
Surat, India
Number of Employees
Under 49
Average Hourly Rate
$20/hr
Minimal Budget
Under $1,000
Portfolios Count
1 Project Listed
Seathink Services
WordPress Website Design
Web Development
eCommerce Development
Web Design
UI/UX Design
Blockchain
Mobile App Development
Social Media Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Pcexim
Budget Maids
silvilus
Data sourced from the agency's DesignRush profile
Seathink Reviews & Testimonials
Shivam Nandaniya
Review from Google
5.0★
Shivam Nandaniya's Review Sourced from Google
Seathink IT has developed a really useful and user-friendly application. The app runs smoothly, has a clean design, and makes tasks much easier. Great work by the team!
Manav Modi
Review from Google
5.0★
Manav Modi's Review Sourced from Google
Working with SeaThink was a fantastic experience. Their communication was clear, and they kept me updated at every stage of the project. The website was delivered on time without compromising on quality. Truly a team you can trust!
divyraj_ahir___
Review from Google
5.0★
divyraj_ahir___'s Review Sourced from Google
I had a wonderful experience with SeaThink. The quality of their work, attention to detail, and commitment to deadlines are commendable. The pricing was fair for the high-quality service they delivered.
Reviews verified by DesignRush and sourced from the agency's profile
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Hastree Technologies helps startups and businesses build practical digital products with AI integration, mobile app development, and custom web development. We develop apps for iOS, Android, macOS, watchOS, tvOS, and the web, from MVPs to full-scale production systems. Our team focuses on clean engineering...
Top Services:
Software Development
Mobile App Development
AI Development
Web Development
HR Outsourcing
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Location
Noida, India
Number of Employees
Under 49
Average Hourly Rate
$20/hr
Minimal Budget
Under $1,000
Hastree Technologies Pvt Ltd Services
Software Development
Mobile App Development
AI Development
Web Development
HR Outsourcing
SEO
UI/UX Design
VR/AR
IoT
Blockchain
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Great experience working with the team at Hastree. They have strong technical expertise and delivered a smooth, reliable product. I was especially impressed with how they incorporated AI-driven features that made the app smarter and more efficient. Communication was clear, timelines were managed well, and the overall quality exceeded expectations. Highly recommended!
Mumta Chambers
Review from Google
5.0★
Mumta Chambers's Review Sourced from Google
Had a really good experience working with this team on our medical app. They paid close attention to security and made sure everything aligned with HIPAA compliance, which was critical for us. The team was easy to communicate with, quick to respond, and handled feedback well throughout the process. Their experience in healthcare projects really shows in the way they approach things. Solid execution and a smooth overall collaboration.
BHUMI SHARMA
Review from Google
5.0★
BHUMI SHARMA's Review Sourced from Google
Hastree Technologies is a great company to work with. The team is supportive and the work environment is very supportive. It provides good opportunities to learn and grow professionally.
Reviews verified by DesignRush and sourced from the agency's profile
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Your Go-To Partner for Website and Mobile App Development.
OpenGenX Technologies is a trusted digital solutions provider offering custom software, mobile app, and web development. Leveraging modern technologies like React, Node.js, and cloud platforms, they deliver scalable, high-performance solutions. Known for their agile process, timely delivery, and flexible...
Top Services:
Software Development
Web Development
Mobile App Development
Staff Augmentation
Software Testing
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Location
Madurai, India
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
Under $1,000
Portfolios Count
1 Project Listed
Opengenx Technologies Services
Software Development
Web Development
Mobile App Development
Staff Augmentation
Software Testing
Digital Marketing
SEO
UI/UX Design
Social Media Marketing
Blockchain
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Brad J. Dunn
Kenneth M. Todd
Georgia R. Jeffery
Data sourced from the agency's DesignRush profile
Opengenx Technologies Reviews & Testimonials
SOFIYA DEVI
Review from Google
5.0★
SOFIYA DEVI's Review Sourced from Google
Opengenx Web Development Company demonstrates strong expertise in delivering high-quality digital solutions. Their professionalism, attention to detail, and commitment to excellence are clearly reflected in their work. Additionally, their client management approach is highly commendable, with clear communication and a strong focus on understanding client needs. Overall, Opengenx stands out as a reliable and efficient company for web development services.
bharathi meena
Review from Google
5.0★
bharathi meena's Review Sourced from Google
Working at OpenGenX has been a great experience. The work environment is friendly, supportive, and encourages collaboration across teams. One of the best parts of working here is the opportunity to build and develop our own products, which gives employees real ownership and valuable hands-on experience.
The company actively works with modern technologies and encourages us to explore new tools, ideas, and better ways of building products. This creates a strong learning culture where we continue to grow both technically and professionally. It has been a rewarding place to gain practical experience, contribute meaningful work, and be part of innovative product development.
Selva Chitra
Review from Google
5.0★
Selva Chitra's Review Sourced from Google
Had a good experience working at OpenGenX. The team is supportive and the work environment is friendly. I got opportunities to learn new skills. Management is approachable. A good place to start a career
Reviews verified by DesignRush and sourced from the agency's profile
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Smart contract development and auditing: Writing self-executing code and reviewing it to prevent bugs, exploits, or costly failures Â
dApp development: Building decentralized apps that run on blockchain networks instead of centralized servers Â
Token development and NFT platforms: Creating digital tokens, cryptocurrencies, and marketplaces for trading assets Â
Blockchain integration: Connecting blockchain with existing systems like web apps, enterprise software, or cloud platforms Â
Private and enterprise blockchain solutions: Setting up custom networks for businesses that need control, privacy, and scalability Â
Blockchain consulting: Advising on use cases, architecture, and whether blockchain is the right fit Â
Wallet development: Building secure wallets for storing and managing digital assets Â
Maintenance and support: Monitoring performance, fixing issues, and updating systems after launchÂ
What platforms do blockchain developers use?
Blockchain development firms use a mix of public networks, enterprise platforms, and developer tools to build, deploy, and manage blockchain solutions. They choose platforms based on speed, cost, scalability, and whether the project needs a public or private network.Â
Key platforms and networks:Â
Ethereum: The most widely used platform for smart contracts and decentralized applications Â
Solana: Built for high speed and low fees, often used for scalable dApps and marketplaces Â
Avalanche: A flexible platform that supports custom blockchain networks and fast transaction finality Â
Hyperledger Fabric: Designed for private, permissioned systems used by enterprises Â
Corda (R3): Common in finance and regulated industries where data privacy is critical Â
IBM Blockchain: Enterprise-grade solution built on Hyperledger for secure business use cases Â
Development tools and infrastructure that blockchain development agencies use:Â
Node providers (e.g., Alchemy, Infura, QuickNode): Give developers access to blockchain networks without running their own nodes Â
Smart contract tools (e.g., Remix IDE): Used to write, test, and deploy contract code Â
Frameworks and CLIs (e.g., Ignite CLI): Help set up and manage blockchain projects fasterÂ
How much do blockchain companies charge for their services?
Simple solutions: 1 to 2 months Basic wallets or simple smart contract apps Â
Mid-level projects: 2 to 4 months dApps with integrations and user functionality Â
Complex systems: 4 to 9+ months DeFi platforms, marketplaces, or enterprise solutions Â
Blockchain development agencies build products in stages, and each is adding time:Â
Planning and requirements: 1 to 2 weeks Â
Architecture and design: 2 to 4 weeks Â
Development: 1 to 6 months Â
Testing and QA: 2 to 4 weeks Â
Deployment: 1 to 2 weeksÂ
Factors that affect the timeline include scope and feature set, choice of blockchain platform, team experience, and whether you build from scratch or use existing tools.
What is the difference between public and private blockchains?
Public blockchains are open to anyone, while private blockchains are restricted to approved users and controlled by an organization.Â
You can see the main differences in the following table:Â
Feature
Public blockchain
Private blockchain
Access
Anyone can join
Permission required
Control
Decentralized
Controlled by one entity or group
Transparency
Fully transparent
Limited visibility
Speed
Slower
Faster
Cost
Higher (transaction fees)
Lower
Security
High through decentralization
High, but depends on governance
Use cases
Crypto, DeFi, NFTs
Enterprise systems, internal operations
How do blockchain development agencies ensure security?
Blockchain development firms ensure security by combining secure coding, testing, and continuous monitoring to prevent vulnerabilities and protect data and transactions.Â
Key security practices include:Â
Smart contract audits: Reviewing code to detect bugs, exploits, and logic flaws before deployment Â
Secure development practices: Using proven frameworks, code standards, and peer reviews Â
Encryption and key management: Protecting data with cryptography and secure storage of private keys Â
Testing and simulation: Running stress tests and attack scenarios to identify weaknesses Â
Access control: Limiting permissions and enforcing authentication for users and systems Â
Ongoing monitoring: Tracking activity, detecting threats, and applying updates or patches quickly Â
Security is built into every stage, not added after deployment.Â