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
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Exaud
VerifiedVerified by the DesignRush team for authenticity and credibility.Precise Software Solutions
We are a software engineering and digital strategy AI company...
Top Services:
- AI Development
- IoT
- Mobile App Development
- Software Development
- Wearables
- Show more
- Location
- Ermesinde, Portugal
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 6 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsExaud Services
Data sourced from the agency's DesignRush profileAnoto Samsung NDrive Blaupunkt Audi Essent Facebook Google Nissan Presto
Exaud Reviews & Testimonials

Educational Review from Dmitriy Ksendzovsky
I have had an positive experience working with Exaud on expanding and maintaining several software products. Our software consulting technology stack is quite wide, from embedded development to mobile game dev, making it challenging to find the right partner knowledgeable in a number of these areas. The Exaud team is professional, flexible and continues to provide the development expertise we require to fulfill our project needs on time and budget.

Educational Review from Stacy McCarthy
Learning Design Network has been providing expert learning programs for 20 years, helping nearly 1 million employees worldwide achieve professional success. COVID prompted us to digitalize our product and we chose Exaud as our technology partner. Together, we developed a comprehensive digital tool for customized training and effortless collaboration in a 3D digital environment. The platform leverages our expertise and Exaud's technical capabilities, delivering a high-quality user experience.

Enterprise Review from Tim Martin
We have a very long history of working with Exuad, which in itself is about the best endorsement you can have. We have been working with them on projects for going on 10 years and they are our go to external dev team. Georg and team are not only very talented they are highly ethical. To me the later point is the most important, you can trust that they will provide high quality work and you can absolutely trust them on the business side.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEnd-To-End Product Development | Agile Development Teams
Qarbon IT are experts in creating web and mobile applications with over 15 years of experience. We have the experience, knowledge and technical know-how to deliver an innovative digital product that will exceed your expectations. Qarbon IT assists businesses across major industries, such as finance, banking...
Top Services:
- Software Development
- Mobile App Development
- UI/UX Design
- eCommerce Development
- IoT
- Show more
- Location
- Katowice, Poland
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 27 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsQarbon IT Services
Data sourced from the agency's DesignRush profileTakamol Holding Cryptospace Golem Network Elvia entertainment ltd Clubspeed Holiday park & resort Komputronik Group Mann + Hummel Bay Shore High School Alumni Association aeternity
Qarbon IT Reviews & Testimonials
Jonasz Wieclawski's Review Sourced from Google
The best IT team in Poland I've ever worked with. They solve problems and find solutions to challenges that most people would throw up their hands in disbelief. In my opinion, this is a testament to the caliber and quality of the developers who, to a greater or lesser extent, shape our business's success.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsVirtual Technology Office - An extended execution arm of a CTO.
Facing challenges to scale up tech? Have a biz/tech requirement but no bandwidth to execute? Too many tech projects eating up your time to focus on core business? Connect with us. We provide fractional CTO services in build-operate-transfer models...
Top Services:
- IoT
- Software Testing
- AI Development
- Blockchain
- Mobile App Development
- Show more
- Location
- Bengaluru, India
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 5 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOpenTurf Technologies Services
Data sourced from the agency's DesignRush profileZeta Terrapay DishSling Dubai Islamic Bank YouCloud Factoreal YABX Burpple Comviva Lifedata.ai
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7 Frequently Asked Questions About Blockchain Development Companies
What services do blockchain development agencies offer?
Blockchain development agencies design, build, and support blockchain-based solutions that automate processes, improve transparency, and enable secure digital transactions.Â
Common services include:Â
- 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?
Blockchain development companies typically charge from $40,000 to $300,000+ for a full solution, depending on complexity, features, and security requirements.Â
Cost by project complexityÂ
The biggest cost driver is the solution's complexity, from basic smart contracts to full-scale platforms.Â
- Simple blockchain apps: $40,000 to $60,000Â
Basic features like simple smart contracts or payment functionality  - Mid-level applications: $60,000 to $150,000Â
dApps with user roles, integrations, and moderate decentralization  - Complex blockchain systems: $150,000 to $300,000+
Enterprise platforms, advanced security, custom architectureÂ
Cost by solution typeÂ
Different blockchain products have different price ranges based on functionality.Â
- dApps: $35,000 to $150,000Â Â
- NFT marketplaces: $55,000 to $125,000Â Â
- Crypto wallets: $125,000 to $200,000Â Â
- Crypto exchanges: $135,000 to $190,000Â Â
- DAO platforms: $10,000 to $30,000Â
Cost breakdown across the projectÂ
Your budget is split across multiple phases, not just development.Â
- Consulting and planning: 5%Â Â
- UI/UX design: 10%Â Â
- Core development: 45%Â Â
- Testing and QA: 25%Â Â
- Deployment and maintenance setup: 15%Â
Final pricing depends on scope, security level, integrations, and whether you build on an existing blockchain or create a custom one.Â
What are the ongoing costs of maintaining a blockchain solution?
Ongoing blockchain costs typically range from 15% to 25% of the initial development cost per year, depending on system complexity and usage. Â
Key ongoing costs include:Â
- Maintenance and updates: Bug fixes, performance improvements, and feature upgrades Â
- Infrastructure: Node providers, cloud services, and storage as usage grows Â
- Security: Regular audits, monitoring, and protection against vulnerabilities Â
- Transaction fees: Ongoing network or gas fees for processing transactions Â
- Support and operations: Technical monitoring, DevOps, and user support Â
- Compliance: Legal, regulatory, and data protection requirements Â
Costs increase as the system scales, handles more transactions, or requires higher security.Â
How long does it take to build a blockchain solution?
The best blockchain development company typically needs 3 to 9+ months to build a blockchain solution, depending on complexity, features, and security requirements.Â
Typical timeline by complexity:Â
- Simple solutions: 1 to 2 monthsÂ
Basic wallets or simple smart contract apps  - Mid-level projects: 2 to 4 monthsÂ
dApps with integrations and user functionality  - Complex systems: 4 to 9+ monthsÂ
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
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