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: October 21, 2026

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.

United States × .Net Development × Professional Services × Sort by: Top Rated ×Clear Filters
  • Zoho consulting, development and integration services for operationally complex organizations.

    CodeStringers helps growth-stage and small-to-mid-market companies implement, integrate, and operate Zoho-centered digital enablement solutions by combining senior executive consulting, cost-effective delivery teams, and custom software capabilities when needed...

    Top Services:

    • Software Development
    • AI Development
    • Web Development
    • CRM Consulting
    • ERP Consulting
    • Show more
    Location
    Santa Cruz, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up

    CodeStringers Services

    • Software Development
    • AI Development
    • Web Development
    • CRM Consulting
    • ERP Consulting
    • Managed Services
    • Mobile App Development
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Tübr Storage
    • Addiction Rep
    • True Pet Kitchens
    • MasterControl
    • Tonal
    • MindTRAK Golf
    • Mido Play
    • Inboard Technology
    • SiteOne Services
    • KnowledgeDesk
    Data sourced from the agency's DesignRush profile

    CodeStringers Reviews & Testimonials

    • Lori Feld Oakley
      Lori Feld Oakley Executive VP at MasterControl
      5.0★

      Software Development Review from Lori Feld Oakley

      Our Services organization is scaling quickly and we urgently needed a custom software application to automate our workflows, without breaking our annual budget. CodeStringers was the perfect fit, supporting us from ideation through go-live and everything in between. They innovated, hit their deadlines and released an amazingly high quality application that decreases our internal costs and improves our reputation with our customers. It would not have happened without CodeStringers.

    • Christian Schraga
      Christian Schraga CEO at Tabula Learning
      4.8★

      Enterprise Review from Christian Schraga

      CodeStringers is the perfect outsourcer to call If you have a solid software business idea but don’t know exactly how to bring it to life. They have both a top-notch development team as well as an executive staff with expertise in marketing, finance, and general business acumen. So they can not only build a product for you but they can make sure that the product you want to build is likely to succeed in the marketplace.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Powering businesses with cutting-edge IT solutions. Your success, our mission.

    Techx4u, Inc is a leading IT solutions provider, specializing in managed IT services, cybersecurity, and cloud computing. We empower businesses with innovative technology solutions tailored to their unique needs, ensuring seamless operations and robust security. Based in Sri Lanka with branches in the United...

    Top Services:

    • Cybersecurity
    • IT Services
    • Cloud Consulting
    • Managed Services
    • IT Compliance Solution
    • Show more
    Location
    Albuquerque, New Mexico
    Number of Employees
    250 - 499
    Average Hourly Rate
    $15/hr

    Techx4u, Inc Services

    • Cybersecurity
    • IT Services
    • Cloud Consulting
    • Managed Services
    • IT Compliance Solution
    • Web Development
    • WordPress Website Design
    • Business Consulting
    • Staff Augmentation
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • RDKRevenue
    • Infopride Solutions
    • ZecureRight PTY LTD
    • Janathakshan Gte Ltd
    • ADRiMP Sri Lanka
    • Duryog Nivaran
    • World Tech University
    Data sourced from the agency's DesignRush profile

    Techx4u, Inc Reviews & Testimonials

    • Mohammed Muneef
      Mohammed Muneef CEO at RDKREVENUE
      5.0★

      Managed Services Review from Mohammed Muneef

      Techx4u has been an exceptional partner in managing our server infrastructure, ensuring that our systems remain secure, reliable, and up-to-date. Their comprehensive approach to server administration and patch management has significantly enhanced our IT operations.In terms of server administration, Techx4u excels in monitoring and maintenance. They provide continuous oversight of our server performance and health, which has minimized downtime and ensured that our servers operate at optimal levels. Their expertise in configuration management has been evident as they have tailored our server settings to meet our specific business needs and compliance requirements, streamlining our operations and improving overall efficiency.One of the standout features of Techx4us service is their robust backup and recovery solutions. Regular backups and efficient recovery processes have given us peace of mind, knowing that our data is well-protected against loss or corruption. This aspect of their service has been particularly valuable, as it ensures that we can quickly recover from any unexpected data loss incidents.When it comes to patch management, Techx4us automated patch deployment system ensures that our systems are always up-to-date with the latest security fixes and improvements. This proactive approach has significantly reduced the risk of vulnerabilities. Additionally, their thorough vulnerability management process identifies and addresses potential security threats in our server infrastructure, helping to prevent breaches before they occur.Techx4u also places a strong emphasis on compliance assurance. Through regular patch updates and security assessments, they ensure that our servers comply with industry standards and regulations. This has been crucial in maintaining our compliance posture and avoiding potential penalties.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Digital Partner for Project Success.

    Perimattic is a technology partner specializing in AI development, software development, cloud solutions, DevOps, MLOps, and enterprise technology services. The company helps startups, growing businesses, and enterprises build secure, scalable, and high-performance digital solutions...

    Top Services:

    • AI Development
    • DevOps Consulting
    • Cloud Consulting
    • Software Testing
    • Software Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr

    Perimattic Services

    • AI Development
    • DevOps Consulting
    • Cloud Consulting
    • Software Testing
    • Software Development
    • Big Data Analytics
    • IT Services
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Taygo Cloud
    • Paysafe
    • ITCAN
    Data sourced from the agency's DesignRush profile

    Perimattic Reviews & Testimonials

    • Neeraj Mishra
      Neeraj Mishra Founder at TCP Creations
      5.0★

      UI/UX Design Review from Neeraj Mishra

      The dashboard Perimattic delivered is minimal, well-structured, and very user-friendly. Small touches like the layout, flow, and clarity of controls make a big difference. Great work by Gaurav and his team.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Best of Business Strategy, Creative Strategy, and New Technologies

    Elevate your marketing success with FabCom, the top Phoenix Integrated Marketing Agency. Our dynamic team goes beyond the ordinary, delivering exceptional ROI and empowering brands to reach new heights. With passionate creatives and strategic thinkers, we craft engaging advertising campaigns, leveraging...

    Top Services:

    • Branding
    • Digital Strategy
    • Design Services
    • Digital Marketing
    • Web Design
    • Show more
    Location
    Phoenix, Arizona
    Number of Employees
    Under 49

    FabCom Services

    • Branding
    • Digital Strategy
    • Design Services
    • Digital Marketing
    • Web Design
    • Web Development
    • Graphic Design
    • Creative Services
    • Video Production
    • PPC
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Education
    • Technology
    • Healthcare
    Data sourced from the agency's DesignRush profile

    FabCom Reviews & Testimonials

    • Valerie Cimarossa
      Valerie Cimarossa Review from Google
      5.0★

      Valerie Cimarossa's Review Sourced from Google

      We've been working with FabCom for more than twenty years. They understand and love our brand as much as we do - they created what it is today. They are effective, forward thinking and smart. They guide us through our ideas and are never short on innovative ideas of their own.

    • Ariane Buenaventura Moffett
      Ariane Buenaventura Moffett Review from Google
      5.0★

      Ariane Buenaventura Moffett's Review Sourced from Google

      It's always such a treat visiting FabCom. Every person I've interacted with on the team has been wonderful. The creative work they produce is very impressive and their studio has the best and newest technology.

    • Tony Fabiano
      Tony Fabiano Review from Google
      5.0★

      Tony Fabiano's Review Sourced from Google

      One of the top integrated strategic marketing and advertising firms in the state, likely the country. Full-service, no-nonsense, industry-leading technology and methods. Filled with talented and brilliant people who make it all possible. Convenient location in Scottsdale for local clients; excellent excuse for a golf vacation for those from out of town.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • The Single Source For Your Business Technology Needs

    Congruent Software, headquartered in Bellevue, WA, delivers software development and IT consulting to global enterprises. With 30+ years and 3,000+ projects, the Microsoft and Salesforce partner specializes in AI, cloud, custom apps, data analytics, Dynamics 365, Salesforce and SharePoint...

    Top Services:

    • AI Development
    • Software Development
    • Mobile App Development
    • Software Testing
    • IT Services
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    100 - 249

    Congruent Software Inc. Services

    • AI Development
    • Software Development
    • Mobile App Development
    • Software Testing
    • IT Services
    • CRM Consulting
    • ERP Consulting
    • Big Data Analytics
    • DevOps Consulting
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • 3M
    • Starbucks
    • Microsoft
    • Premera Blue Cross
    • Hitachi Consulting
    • Getty Images
    • Daktronics
    • Council on Foreign Relations
    • GEA
    • Fanatics
    Data sourced from the agency's DesignRush profile
  • Custom Software & AI for Growing Businesses

    Adaptyve Digital helps growing businesses build custom software, AI solutions and workflow automations that solve real operational challenges. With 25+ years of experience, we provide senior technical expertise without the overhead of a traditional agency...

    Top Services:

    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Houston, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $175/hr
    Minimal Budget
    $1,000 - $10,000

    Adaptyve Digital Services

    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Business Consulting
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • WAVE Electronics
    • DVF
    • SITECH
    • AV Express
    • Camco
    • Camco Outdoors
    • MundoNOW
    • SA Fishing
    • Zimba
    • Succulent Bar
    Data sourced from the agency's DesignRush profile
  • Try working with true business professionals!

    Digital marketing agency in Kennesaw, GA, serving clients in the USA. We offer web design, SEO, GEO, AEO, local SEO, PPC advertising, content marketing, and related services. Our competitive advantage is over 45 years sales and marketing experience (25+ years digital). No foreign outsourcing...

    Top Services:

    • Digital Marketing
    • Web Design
    • SEO
    • AEO
    • CRO
    • Show more
    Location
    Kennesaw, Georgia
    Number of Employees
    Under 49
    Average Hourly Rate
    $225/hr
    Minimal Budget
    $1,000 - $10,000

    E-Platform Marketing Services

    • Digital Marketing
    • Web Design
    • SEO
    • AEO
    • CRO
    • Content Marketing
    • PPC
    • WordPress Website Design
    • Branding
    • Social Media Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Floor & Decor
    • Nueterra Holdings
    • CKS Packaging
    • RF System Labs
    • Huper Optik
    • Formetco
    • Arcadia Equipment
    • Findlay Roofing
    • Wiretech LTD
    • Cobb County School District
    Data sourced from the agency's DesignRush profile

    E-Platform Marketing Reviews & Testimonials

    • DeKisha Anderson
      DeKisha Anderson Review from Google
      5.0★

      DeKisha Anderson's Review Sourced from Google

      Great Customer Service - just had a great one on one with Mr. J. Hobson of E-Platform Marketing. Website needed much attention and updates and he has been most helpful and patient. Product knowledge made it so doable and very easy to work with in getting things up to par. Very willing to get real results to keep things running smoothly. Patience is key in this industry and thank you for it! I highly recommend.

    • Sheree R.
      Sheree R. Review from Google
      5.0★

      Sheree R.'s Review Sourced from Google

      My husband and I have used EPlatform Marketing for many years. He's the best in the business and would highly recommend his services to anyone.

    • Alex Gunter
      Alex Gunter Review from Google
      5.0★

      Alex Gunter's Review Sourced from Google

      E-Platform marketing is the best company out there when it comes to website design, SEO, & website management. We have been a customer for many years & our contact, Jim, is always so helpful. The response times are fast, the attention to detail is shown, & they are genuinely good people to work with. We will be a customer for many years so I wanted Google to see how pleased we are with their service!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Cybersecurity and IT Services

    We're a collection of innovative cybersecurity engineers, and we believe that our ideas can help shape a better future for your company. We pride ourselves on offering unmatched, devoted service while offering clever solutions for businesses of all sizes...

    Top Services:

    • IT Services
    • Cybersecurity
    • Managed Services
    • IT Compliance Solution
    • Cloud Consulting
    • Show more
    Location
    Warren, Michigan
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000

    Cyber Protect LLC Services

    • IT Services
    • Cybersecurity
    • Managed Services
    • IT Compliance Solution
    • Cloud Consulting
    • Staff Augmentation
    • AI Development
    • Software Development
    • WordPress Website Design
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Small Business Industry
    • Finance Industry
    • Healthcare Industry
    Data sourced from the agency's DesignRush profile

    Cyber Protect LLC Reviews & Testimonials

    • Alicia
      Alicia Review from Google
      5.0★

      Alicia's Review Sourced from Google

      We have been a client of Cyber Protect for the last 10 months, and I am very happy with our security services so far. Chey and his team are promt and professional and have handled anything that has come up within minutes. They go above and beyond!

    • Cheyanne Brown
      Cheyanne Brown Review from Google
      5.0★

      Cheyanne Brown's Review Sourced from Google

      Cyber Protect, and its owner Cheyenne Harden, is a wonderful company to work with. Not only is Cheyenne Harden extremely knowledgeable in information, technology, and cybersecurity, but he is also is kind and easy to work with. Him and his company will do everything they can to ensure that your data is secure, protected, and that your technology is running properly. I highly recommend him and his company.

    • Cindy Luo
      Cindy Luo Review from Google
      1.0★

      Cindy Luo's Review Sourced from Google

      Terrible service. I trusted Cyber Protect LLC to help secure my data, but I still got hacked while under their protection. When I reached out for help, their support was slow, unresponsive, and offered no real solution. They took no accountability and left me to deal with the damage on my own. Completely unreliable and not worth the money. Would never recommend.Edit: Your response is disappointing and frankly evasive. If you have no record of me as a client, maybe that explains why your “protection” failed so miserably. Your slow, unresponsive support and complete lack of accountability left me to deal with the consequences alone. Claiming that neither you nor your clients have ever experienced a breach sounds more like a PR line than reality.If you want to prove otherwise, then start by owning up to your failures instead of brushing off legitimate concerns. Until then, your “enterprise-grade solutions” are nothing but empty words.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • SEO & Web Design That Makes the Phone Ring

    Techy Toes is an SEO, Google Maps and web design agency in St. Petersburg, FL, working with local businesses across the US. We measure success in calls and leads, not rankings: one client went from 4 calls a month from Google to 77, another from a quiet website to 2030 leads a month...

    Top Services:

    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • AEO
    • Show more
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed

    Techy Toes Services

    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • AEO
    • SEO
    • PPC
    • Social Media Marketing
    • CRO
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Aloha Pools
    • FC Fence
    • Mustache Gold and SIlver
    • LE Construction
    Data sourced from the agency's DesignRush profile

    Techy Toes Reviews & Testimonials

    • Intragital Solutions
      Intragital Solutions Review from Google
      5.0★

      Intragital Solutions's Review Sourced from Google

      Very professional and honest, Isaac did our website. Never expected such good return, we started getting leads on our site with in the first couple months. Would recommend them to everyone.

    • ivy on Milopeco909
      ivy on Milopeco909 Review from Google
      5.0★

      ivy on Milopeco909's Review Sourced from Google

      I highly recommend Isaac with Techy Toes! I’ve been blessed to have found Isaac and received his services to help promote our plumbing business in Arizona. Within the first 6 months of help Isaac not only had provided us with a fully functioning website but also had worked his magic in getting us to become visible on Google. We have held one of the top three spots in our city on Google Maps for the past 4 years now. The past three years we were awarded the best plumbing company in our city from 3 separate plumbing magazines. We would never have been able to accomplish what we have so far without Isaac. We highly recommend his SEO, Website, and other business related services. He is very honest, patient, and hard working. He will always receive our honor and gratitude for his dedicated hard work and patient understanding. Thank You Isaac and Techy Toes.

    • Ramsina Herrington
      Ramsina Herrington Review from Google
      5.0★

      Ramsina Herrington's Review Sourced from Google

      I am very satisfied with Techy Toes Services. Isaac with Techy Toes was able to help make my company, All Drains Emergency Plumbing in Glendale, Arizona one of the top plumbing companies in our city. He was not only able to get our Google Business profile approved for Google, but he was also able to make us visible on Google Maps ascertaining us one of the top three spots on Google Maps in our city which has directly related to our company’s success including giving us a chance to win multiple top plumbing company awards in our city. I will never replace him with another marketer. He is a key core to our company and its continued success. If you are a new company looking for SEO services or help with your website or Google Profile, or Apple profile, or voice search platforms, Isaac with Techy Toes can help tremendously and he is very fair with his pricing. Thank You for all your continued help Isaac! I highly recommend his services.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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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