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

4 Companies-Rankings updated: October 19, 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 × Industrial × $10,000 - $25,000 ×Clear Filters
  • Valasys Media

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    Award-Winning Demand Generation Agency

    Valasys Media is a highly acclaimed and award-winning Inc. 5000 vetted Lead Generation agency known for ABM, CS, MQL, HQL, BANT campaigns. Our full-funnel services include touch points like programmatic media buying, LinkedIn ads, Email Marketing, Tele-touch and Intent-based ABM building...

    Top Services:

    • Media Buying
    • Digital Marketing
    • PPC
    • Advertising
    • Email Marketing
    • Show more
    Location
    Jersey City, New Jersey
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    7 Projects Listed

    Valasys Media Services

    • Media Buying
    • Digital Marketing
    • PPC
    • Advertising
    • Email Marketing
    • Direct Marketing
    • Market Research
    • Web Development
    • SEO
    • Graphic Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Integrate
    • HP Enterprise
    • Pluralsight
    • Marketo
    • Adobe
    • CISCO
    • Dell
    • IBM
    • Merit Mile
    • Microsoft
    Data sourced from the agency's DesignRush profile
  • Smarter IT Staff Augmentation. Powered by AI.

    Based in Dallas, TX, Programmers.ai is a global technology partner leading the next generation of staff augmentation. With 1000+ developers and consultants, our team excels in hundreds of technologies across 15+ industries all trained in AI tools to deliver up to 2X productivity gains vs. traditional staffing...

    Top Services:

    • IT Services
    • DevOps Consulting
    • Staff Augmentation
    • Software Development
    • Software Testing
    • Show more
    Location
    Texas City, Texas
    Number of Employees
    250 - 499
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000

    Programmers.ai Services

    • IT Services
    • DevOps Consulting
    • Staff Augmentation
    • Software Development
    • Software Testing
    • Mobile App Development
    • Web Development
    • Web Design
    • ERP Consulting
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Cisco
    • WellSky
    • ABL
    • Trinity
    • Reckitt
    Data sourced from the agency's DesignRush profile
  • Enterprise software, nearshore from Mexico — with a U.S. entity in Texas.

    Enterprise software firm founded in 2018, headquartered in Monterrey, Mexico, with a U.S. entity in Laredo, Texas. We build and integrate software for companies that operate at scale, and staff dedicated engineering teams for U.S. clients in Central Standard Time...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • Software Testing
    • CRM Consulting
    • Show more
    Location
    Laredo, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000

    iTechDev Services

    • Software Development
    • Mobile App Development
    • AI Development
    • Software Testing
    • CRM Consulting
    • ERP Consulting
    • Big Data Analytics
    • IT Services
    • Staff Augmentation
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • CEMEX
    • Soriana
    • Mohawk
    • CAINTRA
    • Construrama
    • Certior
    • HUBBI
    • PowerDrive Technologies
    Data sourced from the agency's DesignRush profile

    iTechDev Reviews & Testimonials

    • Uziel Bustamante G
      Uziel Bustamante G Review from Google
      5.0★

      Uziel Bustamante G's Review Sourced from Google

      We've worked together on several occasions, and it's always a pleasure. They are an extremely professional team, with prompt service and the ability to respond quickly to any request. Without a doubt, they are key partners for our projects.

    • Monica Lopez
      Monica Lopez Review from Google
      5.0★

      Monica Lopez's Review Sourced from Google

      We started with them for a custom development project, and they ended up also helping us migrate our email to Microsoft 365 and with security. Having a single team for everything has greatly simplified our day-to-day operations. Highly recommended.

    • EQUIPOL DE CV
      EQUIPOL DE CV Review from Google
      5.0★

      EQUIPOL DE CV's Review Sourced from Google

      Excellent service and attention! We have been working with them for a long time and they are always available in case of any emergency.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • The AI Reimagination Company

    Techjays is an AI development company helping businesses reimagine how work gets done with AI. Combining AI consulting and AI development services, Techjays identifies high-value business workflows, redesigns processes around AI, and builds production-ready systems that deliver measurable outcomes...

    Top Services:

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Menlo Park, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000

    Techjays Services

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • HR Outsourcing
    • Product Design
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Shipdude
    • Fayvit
    • CloudNine
    • Vidhire
    • Nakkheeran
    • Xtra Curriculum
    • SliverBack
    • CoSell
    Data sourced from the agency's DesignRush profile

    Techjays Reviews & Testimonials

    • Larry Miller
      Larry Miller Review from Google
      5.0★

      Larry Miller's Review Sourced from Google

      I've used Tech Jays for several projects, I love their work and love working with the team!

    • Corbin Miller
      Corbin Miller Review from Google
      5.0★

      Corbin Miller's Review Sourced from Google

      I've been working with Techjays since they started and have never been disappointed. On each project I have worked with them they have always delivered on time, on budget and with great quality. They adapt to the needs of the customer and have been in large part, more of a technical co-founder for my start ups. I'll continue to work with them and highly recommend them to anyone!

    • Jonathan Rodriguez
      Jonathan Rodriguez Review from Google
      5.0★

      Jonathan Rodriguez's Review Sourced from Google

      We've been working with TechJays the past 18+ months and the outsource experience has been great. They are agile and compared to previous outsource experiences, their competence, quality, and delivery punches above the rest.

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

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
128,711+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
4

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

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