Collaborate with top .NET development companies in the United States to modernize, streamline, and scale your systems through custom .NET development.
We Compiled the Best USA .Net Development Companies for You
9 Companies-Rankings updated: September 03, 2026
DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.
Building Powerful B2B eCommerce and Custom Platforms for Leading Manufacturers & Distributors
Codup specializes in bespoke software development services designed to streamline complex B2B workflows. Our decades of experience enable superior outcomes in integrating ERP, CRM, and fulfillment systems, helping businesses modernize operations and boost digital revenue with tailored, efficient solutions...
Top Services:
eCommerce Development
Web Development
Software Development
Mobile App Development
Web Design
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Location
Houston, Texas
Number of Employees
100 - 249
Average Hourly Rate
$100/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
13 Projects Listed
Codup Services
eCommerce Development
Web Development
Software Development
Mobile App Development
Web Design
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Unilever
Dyson
Seacoast Bank
Harrods
Cyberizeit
Steelcase
National Wildlife Federation
Foga
Quadro
Zendex
Data sourced from the agency's DesignRush profile
Codup Reviews & Testimonials
Undisclosed Manager at Internet Provider
5.0★
Web Development Review from Undisclosed
The client has reaped significant benefits from Codup.co's top-notch, scalable coding assistance over the years, irrespective of the geographical distance. Throughout their partnership, Codup.co has offered the enterprise substantial savings in time, resources, and finances. Moreover, the quality of its services has shown consistent enhancement over time.
Undisclosed Owner at Business Services Company
5.0★
eCommerce Development Review from Undisclosed
The team efficiently accomplished all tasks assigned to them, demonstrating superior communication skills. Due to their efforts, two online marketplace tools were seamlessly integrated. It was evident that they had a keen understanding of the our needs.
Paul C Impellizeri VP of Digital Services at Great Big Digital Agency
5.0★
Web Development Review from Paul C Impellizeri
We worked with Codup in migrating over 20+ websites over to [WordPress]. Zaheer and Raheel were excellent project managers and the team worked quickly and efficiently. Their developers are great at troubleshooting and solving issues fast. We would recommend them for any [WordPress] project! (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Alt Digital Technologies is a B2B service provider servicing end to end development, DevOps, Testing and e-commerce solutions for your business. We work efficiently in ATG, Java, React, Salesforce, WordPress and majorly all technologies...
Top Services:
Web Development
eCommerce Development
Mobile App Development
Software Development
Software Testing
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Location
Florida City, Florida
Number of Employees
50 - 99
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Alt Digital Services
Web Development
eCommerce Development
Mobile App Development
Software Development
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Boeing Co
Etisalat
Neiman Marcus
Data sourced from the agency's DesignRush profile
Alt Digital Reviews & Testimonials
Undisclosed Product Manager at Aerospace Company
5.0★
Web Development Review from Undisclosed
It is a feeling of both ecstasy and pride to know that all these years of hard work from our team has delivered a website which is delivering a powerful experience designed to meet the needs of our distribution customers. I am proud of our team's effort and also to be a part of this team.
Undisclosed Product Owner at Manufacturing Company
5.0★
Software Development Review from Undisclosed
You guys are one of the most wonderful people to work with. And most supportive, hardest working. We couldn’t have done what we’ve done in the past 2+ years without this team. Don’t ever forget it your value. You’re absolutely brilliant. It’s been such an honor to be your PO.
Undisclosed Senior Manager, IT at Aerospace Company
5.0★
Mobile App Development Review from Undisclosed
I preferred Alt Digital Technologies over big companies because of the quality and the stability of their people.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Your Digital Innovation Partner. Accelerating innovation through AI, software development, and digital transformation.At Rootstack, we help organizations build scalable digital products, modernize operations, and unlock new business opportunities through technology...
Top Services:
Web Development
Software Development
Mobile App Development
Managed Services
Software Testing
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Location
Austin, Texas
Number of Employees
100 - 249
Average Hourly Rate
$60/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
42 Projects Listed
Rootstack Services
Web Development
Software Development
Mobile App Development
Managed Services
Software Testing
IT Services
DevOps Consulting
eCommerce Development
Big Data Analytics
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Aroma Kava
LastBid
Budu Sushi
Magento 2 Migration
Rite Space
Bookbreakrs
Can
Vivat
Udifo
ServisBook
Data sourced from the agency's DesignRush profile
Dinarys Reviews & Testimonials
André Schörnig Marketing-Manager at myfelt GMBH
5.0★
eCommerce Development Review from André Schörnig
We have been working with Dinarys on our Shopify store for quite some time, and the experience has been great. From the very beginning, communication was clear, efficient, and reliable. The Dinarys team consistently delivered detailed proposals, stuck to agreed timelines, and offered well-structured solutions tailored to our needs. Their technical expertise is impressive, but what really sets them apart is their proactive attitude and genuine commitment to our project. Whenever we had questions or changes, they responded quickly and constructively. Its a true pleasure to work with a partner who feels like an extension of our own team. Highly recommended!
Nissrine Kohen Sr. Backend Shopware Developers at H1 Webdevelopment
4.5★
Web Development Review from Nissrine Kohen
Weve been working with Dinarys for quite some time now, mainly collaborating on Magento and Shopware development projects. Their developers consistently show solid technical expertise and a good understanding of our expectations and workflow.Communication is generally smooth, and response times are quick. Whenever issues arise, the team is open to feedback and acts quickly to improve. Over time, weve seen a positive evolution in their proactiveness and alignment with our teams way of working.They are flexible and collaborative, and its clear that they genuinely aim to build long-term partnerships. For the quality delivered, we feel the pricing is fair and transparent.All in all, weve been satisfied with our cooperation and would recommend Dinarys as a development partner, especially for companies looking for experienced backend developers in Magento and Shopware.
Andrew White Review from Google
5.0★
Andrew White's Review Sourced from Google
I'm wasn't in the German office, but i had experience of communication with this company! I can say that it leaves the warmest feelings in the my heart! Guys you are the best!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Quest Global Technologies is a global leader in development & consultation of cutting-edge Blockchain, Metaverse, AR/VR, QA, Automation, Salesforce & Web3 advancements...
Top Services:
Blockchain
AI Development
Digital Marketing
IT Services
Business Consulting
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Location
Gilbert, Arizona
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
6 Projects Listed
Quest Global Technologies Ltd Services
Blockchain
AI Development
Digital Marketing
IT Services
Business Consulting
Software Testing
VR/AR
Software Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
RadioShack
Shiba Inu coin
Rowan Energy
Taboo Token
Yuse Token
Data sourced from the agency's DesignRush profile
Quest Global Technologies Ltd Reviews & Testimonials
Crystal Heetai Marketing Coordinator at Ayalytical Instruments, Inc.
5.0★
Mobile App Development Review from Crystal Heetai
We hired Quest Global to help build our technical infrastructure from scratch, including a customized blockchain solution, mobile and web app development, and an admin panel. They provided valuable feedback and questioning to direct us and set up the right infrastructure. Overall, I'm satisfied with their work and would highly recommend them.
Amy DeFaveri Content Marketing Manager at GuidePoint Security
5.0★
Mobile App Development Review from Amy DeFaveri
Another company had started the project, so Quest Global picked it up, improved it, and completed it. They did 90%95% of the project. They had all the skills we needed, good technical expertise, reasonable pricing, and they could deliver the project on time. All in all, they were a boutique developing company wed work with the decision-makers and get a high level of service.
Paul Driedger Owner at EcoGreen Landscaping LLC
5.0★
IoT Review from Paul Driedger
We have been thoroughly impressed with Quest Global Technologies Ltd and their innovative AI solutions for the railroad industry. From predictive maintenance to real-time performance analytics, their team has truly transformed our operations. Their in-depth understanding of the industry's challenges, combined with their advanced technological capabilities, allowed them to tailor solutions that have significantly improved our efficiency and safety.The integration of AI tools has led to optimized train scheduling, minimized downtime, and more accurate decision-making, directly impacting our bottom line. Moreover, Quest Global Technologies Ltd provided continuous support and expert advice throughout the project, ensuring a seamless implementation.The professionalism, expertise, and dedication of their team make them a standout partner. If you're looking for AI solutions that bring real, measurable improvements, we highly recommend Quest Global Technologies Ltd.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
For two decades, our innovative digital products development agency has taken on a wide range of challenging IT services. We are masters at crafting custom software solutions and stunning web designs - anything from simple logo design to complex large-scale development projects! Let us help make your digital...
Top Services:
Web Design
eCommerce Development
Web Development
Software Development
Mobile App Development
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Location
New York City, New York
Number of Employees
100 - 249
Average Hourly Rate
$149/hr
Minimal Budget
$25,000 - $50,000
mejix Services
Web Design
eCommerce Development
Web Development
Software Development
Mobile App Development
Digital Marketing
Product Design
IoT
AI Development
Business Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
IT Industry
Small Business Industry
Commercial Industry
Data sourced from the agency's DesignRush profile
mejix Reviews & Testimonials
Yosi Arish Review from Google
5.0★
Yosi Arish's Review Sourced from Google
We used Mejix for few projects in the past for e-commerce sites and mobile application integration with our ERP. The service and communication are great , fast and effective + project delivery were all on time and properly tested before implantation.
Guy Volo Review from Google
5.0★
Guy Volo's Review Sourced from Google
I have used Mejix for several projects in recent years. From simple content websites to complexe-commerce sites. I am incredibly happy with the way their work always comes out. They have always been a pleasure to deal with. On my recent project I worked with Dan and he was just great! I highly recommend using them from the very beginning as they have a vast and diverse expertise.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Accelerating Software Innovation With AI-Native Engineering
Engenious is an AI-native quality engineering partner helping startups and enterprise teams build and deploy software with confidence. We specialize in advanced QA automation, AI model validation, and mobile quality engineering, enabling organizations to accelerate release cycles while reducing risk. From...
Top Services:
Mobile App Development
Web Development
AI Development
Location
Las Vegas, Nevada
Number of Employees
Under 49
Average Hourly Rate
$75/hr
Minimal Budget
$25,000 - $50,000
EnGenious Services
Mobile App Development
Web Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Mysoft Heaven (BD) Ltd. is a Top Software Development Company with 15+ years of excellence. We specialize in enterprise-grade solutions like ERP, FinTech, e-Governance, and HRMS (HR Sheba). Our scalable SaaS platforms and Cyber Security solutions empower global organizations...
Top Services:
Web Development
Digital Marketing
Mobile App Development
Software Development
Staff Augmentation
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Location
Miami, Florida
Number of Employees
250 - 499
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Mysoft Heaven Services
Web Development
Digital Marketing
Mobile App Development
Software Development
Staff Augmentation
BPO
HR Outsourcing
Web Design
Digital Services
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Land Reforms Board, Ministry of Land
Bangladesh Agricultural Development Corporation
Bangladesh Scout, Ministry of Education
Bangladesh Bureau of Statistics (BBS)
a2i & UNDP
JICA+ NILG
Bangladesh Trade and Tariff Commission, Segunbagic
Alliance Group, Bangladesh
Centre for the Rehabilitation of the Paralyzed
JT Enterprises
Data sourced from the agency's DesignRush profile
Mysoft Heaven Reviews & Testimonials
Jahidul Islam Review from Google
5.0★
Jahidul Islam's Review Sourced from Google
Coordination-focused role with cross-team interactionPros:Regular interaction with developers, clients, and management helps build strong communication and coordination skills.Cons:Managing multiple stakeholders at the same time can be challenging.Advice to Management:Clearer role boundaries would help reduce dependency-related delays.
SAHED HOSHEN Review from Google
5.0★
SAHED HOSHEN's Review Sourced from Google
"Choosing Mysoft Heaven (BD) LTD was the best decision! They combined innovation with flawless execution, delivering our project on time and beyond our expectations. Amazing work!"
SM Nasim Abbas Review from Google
5.0★
SM Nasim Abbas's Review Sourced from Google
"I've been using There software for my small business, and I can't imagine going back to the old way of doing things. It has simplified so many tasks, saving me hours of work each week. Their support team is always there to help if I need anything!"
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
What services does a .NET development company in the United States provide?
A .NET development company in the United States provides full-cycle custom software, website, mobile app, and cloud development using the .NET framework and ecosystem. Specifically, they offer the following:
Software audit: Analyzing the software performance, identifying issues, and creating strategies for improvements
.NET modernization: Updating the solution’s codebase, infrastructure, UI/UX design, and other functionalities to the latest standards and technologies
.NET migration: Securely transferring documents and data to a .NET software while minimizing disruption to core business processes
Cross-platform development: Crafting applications that can seamlessly function on iOS, Android, Windows, and Linux devices using a single base code
Custom APIs: Unifying systems by integrating .NET software with other apps and solutions
Enterprise solution development: Producing custom customer relationship management (CRM), finance, and inventory systems based on .NET and Windows apps
.NET consulting: Providing expert advice on optimizing the use of the .NET ecosystem and enhancing current technologies
Maintenance and support: Continuously monitoring performance, resolving issues, and updating .NET applications to ensure they remain fully functional
How much does it cost to develop a .NET solution in the United States?
On average, a .NET solution in the United States costs between $20,000 and $100,000. The final price will depend on the software type, core features and functions, project timeline, compliance requirements, and team expertise.
Here’s an estimation of .NET project costs:
Websites: $10,000-$200,000
Desktop software: $20,000-$150,000
Mobile apps: $20,000-$150,000
Enterprise solutions: $50,000-$1,000,000
Game development: $10,000-$1,000,000
eCommerce apps: $10,000-$200,000
How long does a .NET development company in the United States take to complete a project?
Typically, a .NET development company in the United States takes about 2 to 6 months to complete a project. However, the timeline will ultimately depend on project scope and complexity, development methodology (agile, waterfall, and scrum), and team size.
Below is a timeline breakdown:
Research, discovery, and design: 2-4 weeks
Development: 4-12 weeks
Testing: 2-6 weeks
Launch: 1-2 weeks
How do I choose the right USA .NET development company?
To choose the right USA .NET development company for your business, consider the following steps:
Outline project goals, timeline, budget, target users, and technical requirements
Examine the agency’s service range and technical proficiency, especially in related technologies like ASP.NET, MVC, and Web API
Identify if the agency has case studies and portfolios on projects similar to yours
Read the agency’s positive and negative client reviews to assess its customer service strengths and weaknesses
Schedule an introductory meeting and inquire about security measurements, IP rights, and development approach
Select a US .NET development company that aligns with your budget, project requirements, and company culture
Struggling to find a US .NET company? Visit our Marketplace and send your project requirements. We will match you with companies that best meet your criteria — at no cost!
How do USA .NET development companies ensure quality results?
USA .NET development companies ensure quality results by implementing a comprehensive quality assurance (QA) strategy customized to your specific business objectives. The strategy typically includes a series of tests to verify the software’s end-to-end functionality, usability, security, interoperability, and durability. It also helps ensure that the final product aligns with your business requirements and meets industry standards.
Here are some of the QA tests that US .NET development companies employ:
Unit testing: Examines the software’s individual components, including module behavior, code-level functions, and error handling
User acceptance testing: Simulates real-world usage, such as user interaction and how well the app integrates with business processes and workflows
Integration testing: Assesses how the different system components interact with each other, including how data flows and how third-party systems work together
Regression testing: Analyzes the stability and functionality of the app after a bug has been fixed