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

269 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.

United States × .Net Development × Consumer Goods × Clear Filters
  • AI strategy and delivery that works in production, not just in demos.

    We help organisations close the gap between what AI could do for their business and what it is actually doing with the strategy, engineering, legacy modernisation, and enablement to make it work in production...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Managed Services
    • eCommerce Development
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    Location
    Atlanta, Georgia
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
  • Your Premier U.S. Based Team of Digital Craftsmen and Software Innovators.

    Hidden Mountain Data (HMD) specializes in providing tailored software, data, cloud, AI, and blockchain solutions, including web apps, mobile apps, data warehouses, and CI/CD pipelines. With a focus on transparency, our developers are readily accessible to clients, ensuring clear communication and...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • Blockchain
    • IoT
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    Location
    Meridian, Idaho
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
  • Complex software your users love.

    HappyFunCorp partners with companies across all industries to develop innovative AI digital products and modernize existing ones, leveraging deep engineering skills, product expertise, and human-focused design...

    Top Services:

    • Software Development
    • AI Development
    • Product Design
    • Design Services
    • Digital Strategy
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    Location
    New York City, New York
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
  • Your Strategic Digital Partner For Ultimate Success

    We're helping Houston, TX businesses with website design & development, white hat SEO, social media marketing, PPC, and 360-degree full-service digital marketing...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Social Media Marketing
    • Web Design
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    Location
    Houston, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
  • Reimagining Software Development

    Beehive is a new production model for software development (the world's first we should add) that fuses AI precision with human ingenuity. A model of collective intelligence that breaks projects into microtasks, routing them to global experts, and delivering production-ready, high quality, code faster than...

    Top Services:

    • Web Development
    • Software Development
    • AI Development
    • Mobile App Development
    • IoT
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    Location
    San Jose, California
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
  • We disrupt, problem-solve, and transform

    We were a team of digital experts, enterprise architects, management consultants, and branding marketing experts, all aiming to deliver a positive impact on the private, public, and social sectors around the globe...

    Top Services:

    • Software Development
    • Web Development
    • Digital Marketing
    • Business Consulting
    • Web Design
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    Location
    New York City, New York
    Number of Employees
    Under 49
  • Rank. Protect. Get Featured

    Bluelinks Agency is a specialist digital marketing partner that helps brands rank higher in search, protect their online reputation. Doing SEO, digital PR and press release, online reputation management, personal branding, automation with n8n and Make.com, and WordPress website development...

    Top Services:

    • Digital Marketing
    • SEO
    • Web Design
    • Web Development
    • WordPress Website Design
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    Location
    Forest, New York
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Empowering enterprises to transform through human ingenuity and engineering excellence.

    Visionet is a leading IT services firm delivering digital experiences, enterprise modernization, Data & AI applications, and managed IT services. We leverage digital, data, and cloud technologies to meet clients needs efficiently. Serving diverse sectors, we simplify complexities and foster innovation. With a...

    Top Services:

    • IT Services
    • AI Development
    • Big Data Analytics
    • Cloud Consulting
    • DevOps Consulting
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    Location
    Cranbury, New Jersey
    Number of Employees
    1000 & Up
  • Strategy, design, engineering, and AI

    Bay Area Coders is a San Francisco-based product and engineering studio working with venture-backed startups and growth-stage companies since 2016. We combine strategy, design, engineering, and AI to help teams ship real products and modernize existing ones...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • AI Development
    • Design Services
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    Location
    Roseville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
  • Blueprint to infinite possibilities

    At Ninepings we are experienced Marketing professionals. We focus on managing the Marketing Operations for our clients which includes Planning, Strategy, Analytics, Digital Marketing, Event Management, Content Strategy...

    Top Services:

    • Web Design
    • Digital Marketing
    • SEO
    • Content Marketing
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    Location
    Prosper, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Your Digital Marketing and White Label Partner

    Wildnet Technologies - Best Digital Marketing Agency | White Label Services for Growing Agencies | Results-Driven AI SEO Services  We don't just run campaigns, we build growth engines that scale. As an award-winning digital marketing and SEO agency, we help brands and agencies dominate their markets through...

    Top Services:

    • Digital Marketing
    • Social Media Marketing
    • Staff Augmentation
    • Digital Services
    • PPC
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    Location
    New York City, New York
    Number of Employees
    250 - 499
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
  • Enhancing your businesses' digital presence!

    Codism is a USA-based software design and development company offering a range of services to enhance businesses' digital presence...

    Top Services:

    • Software Development
    • Mobile App Development
    Location
    Burlington, New Jersey
    Number of Employees
    100 - 249
  • Foresight. Adaptability. Diversity. Innovation.

    Design Premiers web designing and development experts will ensure that your website is search engine friendly, aesthetically appealing, and user friendly...

    Top Services:

    • eCommerce Development
    • Logo Design
    • SEO
    • Web Design
    • Web Development
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    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
  • Business Goals Achieved with 1st Position

    Indian SEO Agency is a platform that was born to offer you a complete service for the creation of your website, and marketing promotion. Our main job is to make sure that every detail concerning your company or business website has all the necessary details to become what your customers need to see to trust...

    Top Services:

    • Digital Marketing
    • SEO
    • Social Media Marketing
    • PPC
    • eCommerce
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    Location
    West Chester, Pennsylvania
    Number of Employees
    Under 49
    Average Hourly Rate
    $8/hr
  • See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
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    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
  • Driving Next Generation Innovation.

    Techechelons provides expert digital solutions in DevOps, Mobile & Web, Startup Services, eCommerce, Staff Augmentation, and more, leveraging over 12 years of experience to empower client success. With our comprehensive suite of services, we ensure that your digital needs are met efficiently and effectively...

    Top Services:

    • Mobile App Development
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Software Development
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    Location
    McLean, Virginia
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
  • Your Trusted Path To Innovation

    Space Inventive delivers AI-powered solutions, data engineering, and digital transformation services tailored for pharma, healthcare, and fast-growing businesses. We blend innovation with execution to solve complex challenges through scalable, future-ready technology...

    Top Services:

    • Big Data Analytics
    • IT Services
    • Web Design
    • Branding
    • UI/UX Design
    • Show more
    Location
    New York City, New York
    Number of Employees
    250 - 499
    Average Hourly Rate
    $20/hr
    Portfolios Count
    1 Project Listed
  • Think AI Build Bold Analyze Deep

    At Siffrum, we don't just build technology we craft intelligent solutions that drive smarter, faster growth. As a full-stack IT and Software company with a dedicated Data Science wing, we blend innovation with strategy to deliver measurable results. From AI-powered analytics and custom software to scalable...

    Top Services:

    • eCommerce Development
    • Web Development
    • AI Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    Wilmington, Delaware
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
  • Grow with Technology.

    We have a Team of 100+ Skilled App Developers who thrive on rolling up their sleeves and solving your IT problems and meeting your business needs like APP Development, Software Development, Cloud Consulting, Generative AI Development, Cyber Security Services, Custom ERP Software Development, and Web...

    Top Services:

    • AI Development
    • Mobile App Development
    • Software Development
    • Blockchain
    • Software Testing
    • Show more
    Location
    Irvine, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000

Frequently Asked Questions

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 

  1. Examine the agency’s service range and technical proficiency, especially in related technologies like ASP.NET, MVC, and Web API 
  2. Identify if the agency has case studies and portfolios on projects similar to yours 
  3. Read the agency’s positive and negative client reviews to assess its customer service strengths and weaknesses 
  4. Seek out awards, recognitions, and certifications 
  5. Send a request for proposal (RFP) to your top 5-8 candidates 
  6. Schedule an introductory meeting and inquire about security measurements, IP rights, and development approach 
  7. 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 

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