Best .Net Developer Companies

5 Companies - Rankings updated: April 04, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

United States × Virginia × Reston ×
  • Accelerating Software Development - Building Offshore Software Development Centers

    Saigon Technology focuses on tailored web and app development for emerging startups and established enterprises. The company adheres to ISO standards and embraces an Agile approach. Models: offshore software dedicated team and fixed price.  [... see all Saigon Technology reviews ]
    Location
    Reston, Virginia
    Number of Employees
    500 - 999
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    44 Projects Listed

    Saigon Technology Services

    • Software Development
    • Staff Augmentation
    • AI Development
    • Web Development
    • Mobile App Development
    • DevOps Consulting
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • IDEALPOS
      Software Development Project for Hospitality Company IDEALPOS
    • TRIPTOMATIC
      Software Development Project for Health Care Company TRIPTOMATIC
    • MOBILE TEAM MANAGER
      Software Development Project for Transportation & Logistics Company MOBILE TEAM MANAGER
    • INSTACOUPON
      Software Development Project for Retail Company INSTACOUPON
    • HELLOCLAIMS
      Software Development Project for Transportation & Logistics Company HELLOCLAIMS
    • IDEALPOS CLOUD
      Software Development Project for Software & IT Services Company IDEALPOS CLOUD
    Comprehensive analysis done by DesignRush Agency Experts.

    Saigon Technology Reviews & Testimonials

    • Vasko Markovski
      Vasko Markovski Manager of App Development at Real Estate of Ontario
      5.0
      Mobile App Development Review from Vasko Markovski

      Our company hired them to create an app designed to help expatriates find housing. A project manager and two developers from Saigon Technology worked closely with our team for the app's development. At the start, their team and ours gathered the information needed for the project and planned out how to build the product. They then designed the app's interface and added features. In the end, we launched the app successfully, and our client was satisfied with it.

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    • Rich McMahon
      Rich McMahon CEO at cda ventures LLC
      5.0
      Web Development Review from Rich McMahon

      Our experience with Saigon Technology Company for our Business Consulting website design was exceptional. They displayed a profound understanding of our requirements and translated them into a visually captivating and user-friendly website. Their attention to detail, creativity, and professionalism were evident throughout the process. From concept to delivery, they surpassed our expectations, delivering a sleek and functional website that perfectly encapsulated our brand identity. Saigon Technology Company truly exceeded our expectations.

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    • Jerry Coleman
      Jerry Coleman Founder at Offerpad
      5.0
      Web Development Review from Jerry Coleman

      Saigon Technology surpassed our expectations with their exceptional website design for our real estate company. Their team displayed remarkable creativity, capturing the essence of our brand while ensuring seamless functionality and user experience. From the initial consultation to the final product, their professionalism and attention to detail were evident. They effectively incorporated our feedback, resulting in a website that perfectly showcases our properties and attracts potential buyers. Saigon Technology's expertise in website development is commendable, and we highly recommend them for anyone seeking top-notch design and technical proficiency.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • ChiliPay
    • AWC
    • Barddy
    • Frupor
    • Genesis Sun
    • idealpos
    • ISMS Global
    • Lucette
    • Minmed Telehealth
    • MTM
    Data sourced from the agency's DesignRush profile
  • Turning Your Great Ideas into Successful Web Solutions

    XB Software is a full-cycle development company which have the experience and the expertise to build custom web and mobile solutions. We have a strong and dedicated team of IT professionals engaged in IT consulting, web & mobile app development, business analysis, UX/UI design and QA.Quick facts:17+ years  [... view XB Software profile ]
    Location
    Reston, Virginia
    Number of Employees
    100 - 249
    Average Hourly Rate
    $37/hr
    Portfolios Count
    13 Projects Listed

    XB Software Services

    • Software Development
    • Mobile App Development
    • AI Development
    • Software Testing
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Custom Project Management Gantt Chart Software for Renewable Energy Projects
      Software Development Project for Energy & Mining Company Custom Project Management Gantt Chart Software for Renewable Energy Projects
    • Examarius IT Training & Certification System
      Software Development Project for Software & IT Services Company Examarius IT Training & Certification System
    • School Schedule Maker App
      Software Development Project for Education Company School Schedule Maker App
    • GPS Fleet Management and Truck Booking System
      Software Development Project GPS Fleet Management and Truck Booking System
    • Online Marketplace for Cars and Spare Parts Selling
      Software Development Project Online Marketplace for Cars and Spare Parts Selling
    • Car Service Scheduling and Warehouse Management System
      Software Development Project Car Service Scheduling and Warehouse Management System
    Comprehensive analysis done by DesignRush Agency Experts.

    XB Software Reviews & Testimonials

    • Olga Medvedskaya
      Olga Medvedskaya Review from Google
      5.0

      Olga Medvedskaya's Review Sourced from Google

      It's an incredibly pleasant and friendly place. The team is always willing to help and demonstrates a tremendous commitment to every project. This undoubtedly speaks volumes about the professionalism of this company.

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    • Fresh Media
      Fresh Media Review from Google
      5.0

      Fresh Media's Review Sourced from Google

      Super responsive team and excelent project management of app development. We're thrilled with what we got, and I’d definitely recommend them to anyone looking for a solid software development partner!

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    • Kate Konyukh
      Kate Konyukh Review from Google
      5.0

      Kate Konyukh's Review Sourced from Google

      I am surprised by the professionalism of XB Software employees. They treat the customer with respect. Very high level of knowledge and skills of the entire team. I recommend!

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Webix
    • DHTMLX
    • GanttPRO
    Data sourced from the agency's DesignRush profile
  • Mobile & Web App Development Healthcare/HIPAA

    We specialize in scalable, cloud-based web and mobile app development, with a strong focus on healthcare.  [... view Technology Rivers profile ]
    Location
    Reston, Virginia
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Portfolios Count
    10 Projects Listed

    Technology Rivers Services

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Wearables
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Medicine Adherence Mobile App
      App Development Project Medicine Adherence Mobile App
    • Collaboration Portal and Training Platform
      App Development Project Collaboration Portal and Training Platform
    • Illness Tracking Application
      App Development Project Illness Tracking Application
    • Sales Training and Coaching Application
      App Development Project Sales Training and Coaching Application
    • Handwritten Greetings Card Mobile App
      App Development Project Handwritten Greetings Card Mobile App
    • Bilingual eBook Commerce App
      App Development Project Bilingual eBook Commerce App
    Comprehensive analysis done by DesignRush Agency Experts.
    • Qlarant
    • Phone2Action, Inc
    • eMocha Health
    • Johns Hopkins School of Medicine
    • Sickweather
    • BOSSS
    • Konvergent
    • Ripcord.io
    • SilverStay
    • Hestia Harlow
    Data sourced from the agency's DesignRush profile
  • Infinite Possibilities with Technology

    Kellton is a publicly listed, CMMI Level 5, and ISO 9001:2015 certified global company, providing cutting-edge AI and digital transformation solutions and services in strategy, consulting, digital, and technology.  [... view Kellton profile ]
    Location
    Reston, Virginia
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed

    Kellton Services

    • Big Data Analytics
    • Software Development
    • AI Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Digitization Helps Fast-Food Behemoth be Agile
      Software Development Project Digitization Helps Fast-Food Behemoth be Agile
    • UNICEF HOPE- A Clearer Picture for Global HCT
      Software Development Project UNICEF HOPE- A Clearer Picture for Global HCT
    • Software Platform for Submarine Rescue Missions
      Software Development Project Software Platform for Submarine Rescue Missions
    • Automated Check-in Process for Material Management
      Software Development Project Automated Check-in Process for Material Management
    • Financial System Integration via SAP S/4HANA
      Software Development Project Financial System Integration via SAP S/4HANA
    • Seamless Medicare Experience for Elderlies
      Software Development Project Seamless Medicare Experience for Elderlies
    Comprehensive analysis done by DesignRush Agency Experts.

    Kellton Reviews & Testimonials

    • Priyanshi Verma
      Priyanshi Verma Review from Google
      1.0

      Priyanshi Verma's Review Sourced from Google

      Unprofessional, Mentally Draining, and Disrespectful Work CultureMy overall experience with this company was extremely toxic. During my short tenure, I observed several deeply unprofessional practices that left a lasting negative impact on me:•Salaries were often delayed, without prior communication or explanation.•There were unexplained deductions in monthly salary, and any attempts to raise concerns were either ignored or dismissed by HR.•The HR department was shockingly rude. I personally witnessed employees being humiliated or emotionally broken when they decided to resign — some even left in tears.•No proper Full and Final Settlement (FNF) or professional offboarding process was followed. It’s like once you resign, you’re treated as if you never existed.•Even after resignation, the company continued to send intimidating and threatening emails and begging for small amount of money like 20k, showing a complete lack of empathy — especially towards people who were already in a tough personal or financial situation.If you’re considering joining, please rethink carefully. Make sure everything is documented in writing — verbal promises mean nothing here. A company’s real face shows not when you join, but when you try to leave. And unfortunately, this one shows zero professionalism, zero compassion, and zero respect for employees.

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    • Nani Sweety
      Nani Sweety Review from Google
      1.0

      Nani Sweety's Review Sourced from Google

      I took 4 rounds of Interview for US IT Recruiter position..1st is virtual, 2nd round is In-person, 3rd and 4th are telephonic...They did not give any feedback.Worst experience, please don't attend interviews.waste of time

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    • varsha kaushal
      varsha kaushal Review from Google
      1.0

      varsha kaushal's Review Sourced from Google

      One of the worst organisation I have ever experienced . Exit process is worst moreover company doesn’t respond on your final f&f queries and literally one has to chase to get their full n final payment. Depending upon clients requirement organisation and their leaders push their employees and even salary is deducted if it is not billed as per clients need. Pathetic to be honest. Lala companies are doing better than this in country.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Max Life
    • Real Estate - Foxtons
    • Non Profits - Unicef
    • Govt. of Mauritius
    • Walmart
    Data sourced from the agency's DesignRush profile
  • Software Tailored For Success

    STS Software is a leading software development company in US, delivering innovative, scalable, and cost-effective technology solutions to businesses worldwide. With a focus on quality, agility, and customer success, we specialize in web, mobile, and enterprise software development tailored to meet diverse  [... view STS Software profile ]
    Location
    Reston, Virginia
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    STS Software Services

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • AI Development
    • Software Development
    • VR/AR
    • Software Testing
    • Staff Augmentation
    • DevOps Consulting
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • BAIBAI
      Software Development Project for Health Care Company BAIBAI
    Comprehensive analysis done by DesignRush Agency Experts.
    • Panasonic
    • DMI
    • Standard Chartered
    • Sicpa
    • Abbott
    • Topicus
    Data sourced from the agency's DesignRush profile

Frequently Asked Questions

What is a .NET development company?

A .NET development company is a business that specializes in creating software applications, dynamic websites, games, and other services based on .NET, Microsoft’s free, cross-platform, and open-source development platform. Today, over 38 million live websites use ASP.NET. 

.NET development companies typically have expertise in the new, unified .NET Standard and the following components: 

  • .NET Framework: Collection of tools, programming languages, and libraries for creating software and applications. 
  • .NET Core: Open-source developer platform for building applications 
  • Xamarin: Platform for building applications for iOS, Android, and Windows 

What is a full-stack .NET developer?

A full-stack .NET developer builds both the frontend/interface and the backend/content management systems (CMS) of .NET projects. Their wide range of skills in both technology stacks presents some key advantages over a front-end- or back-end-only developer: 

  • You’ll need fewer team members to complete a project, significantly reducing overall costs. 
  • Familiar with both sides of the project, a full-stack developer can troubleshoot, fix issues, and fill gaps quicker.  
  • As there’s no back and forth between front- and back-end developers, there’s less miscommunication, mistakes, and delays. 

Are .NET and ASP.NET the same?

No, .NET and ASP.NET are two different things – the former is a software framework, and the latter is an application. 

  • .NET is a framework used to build various software applications and services, including applications like ASP.NET. 
  • ASP.NET is a software application used to build websites, web services, and web applications. 

You can think of ASP.NET as an application developed on the .NET framework for the specific purpose of creating software for the web.

What services does a .NET development company provide?

A .NET development company typically provides a range of software development services, including: 

  • Desktop application development 
  • Web application development 
  • Mobile application development 
  • Game development 
  • Cloud solution development 
  • Technical support and maintenance 

Over the course of a project, a .NET developer may: 

  • Plan the software development process and break it down into tasks 
  • Write source code using C#, F#, or Visual Basic 
  • Test the software using manual and/or automated techniques 
  • Discuss project progress with the stakeholders and present developed functionalities 
  • Launch the software and make sure everything operates as planned 
  • Maintain and update the software after deployment  

How much do .NET development companies charge for their services?

.NET development companies charge $5,000 to $20,000 for simple projects and up to $250,000 for large-scope projects, like a customer relationship management (CRM) system for a medium-sized business. Extremely large and complex projects that take years to develop may even require a budget of over $1,000,000. 

Here are some typical price ranges for different kinds of .NET projects: 

  • Small website: $10,000 to $50,000+ 
  • Cross-platform mobile app: $50,000 to $150,000+ 
  • Large enterprise application with integrations: $200,000 to $1,000,000+ 

The top 50 .NET development companies on DesignRush charge an average of $57/hour. Roughly 13% of the .NET development companies on DesignRush accept projects with a minimum budget of less than $1,000, while 5% have a $50,000+ minimum budget. 

Why should you hire .NET developer companies?

You should hire a .NET developer because outsourcing offers the following benefits: 

  • You save costs: According to an in-house vs. outsourcing report, outsourcing software development costs $45/hour on average, compared to $75/hour for in-house development. 
  • They have more experience: Experienced developers with a lot of .NET projects under their belt typically deliver higher quality work. 
  • Faster process: With an external team, you don't need to expend resources to recruit and train an internal .NET developer. 

Here is an example of a successful project by a .NET company called ScienceSoft: a client needed an efficient BI solution for internal management, external financial analytics, and automated customer invoicing. The .NET company developed an analytics web portal, client web portal, reporting tools, and other supporting features from scratch. 

After the .NET development company implemented the BI solution, it improved the speed of reporting by 90%. It also fully automated processes like customer invoicing, enabling significant time savings. 

How do you choose the best .NET development company for your business?

You can choose the right .NET development company by following these steps: 

  1. Define project scope: Decide on a minimum viable product (MVP), product features, and functionality. 
  2. Set project requirements: Make a checklist of goals and the means to achieve them (e.g., deliverables list, timeline, communication guidelines, preferred technologies, etc.). 
  3. Set a budget: Look for the best talent in a range you can afford. If you have a small budget, try expanding your search to countries with more affordable prices. 
  4. Inquire about experience: Ask the .NET development company for a portfolio and similar project examples from your industry.  
  5. Check credentials: Ask for .NET certifications like Microsoft Certified Solutions Associate (MCSA), Microsoft Certified Solutions Developer (MCSD), or Microsoft Training Associate (MTA). 
  6. Choose the development approach: Depending on the project, the company should offer an Agile, Waterfall, or hybrid development methodology. 
  7. Send a request for proposal (RFP): An RFP contains the project introduction and scope, technical requirements, evaluation criteria, budget, and submission guidelines. Select up to five .NET development companies and send them an RFP. 
  8. Review RFPs: Go through each proposal, compare results, and interview your shortlisted companies. 
  9. Make a decision: Pick a .NET company based on your top criteria and examine the contract before signing. 

Take the next step and tell us more about your project –– we will connect you with the best .NET development companies for free. Visit our Marketplace to enter your project details now. 

What questions should I ask a .NET developer company?

Some of the questions you should ask a .NET developer include their experience in .NET development and your industry, specific approaches, and plans for the project. For example, you can ask the following: 

Relevant Background 

  1. How many years of experience does your company have in .NET development? 
  2. Do you have experience developing .NET products for a similar business or industry? Do you have a portfolio of relevant projects? 
  3. What is your level of expertise in C#, F#, Visual Basic, ASP.NET and other .NET technologies? 
  4. Do you have CompTIA A+, IT Information Library Foundation (ITIL) 4 Foundation, Certified ScrumMaster (CSM), Cisco Certified Network Associate (CCNA), Microsoft Azure Solutions, or other relevant certifications? 

Company Services and Processes 

  1. Do you use Agile, Waterfall, or a hybrid approach? 
  2. What communication and project management tools and practices do you use to ensure effective collaboration with remote teams? 
  3. How do you involve clients in the development process? What level of client participation do you typically expect? 
  4. What are your quality assurance and testing processes? How do you identify and solve problems? 
  5. How do you and your team stay on top of the latest .NET technology advancements? 
  6. What security protocols do you have in place to safeguard against potential cyber threats? 
  7. How do you test your software products? 

The Project 

  1. How many people will be on the team? What are their roles and credentials? 
  2. How do we define project milestones? What happens if a milestone isn’t met? 
  3. How will you measure the success of the .NET development project? 
  4. How long do you expect the project to take? What happens if deadlines are not met? 
  5. What kind of support will you provide after the project is completed? For how long? 
  6. What is the planned budget? Are there different service packages and pricing plans? 

Who are the best .NET developers in the US?

According to DesignRush and Google reviews, the top 5 .NET development companies in the US are: 

  • Tech Gropse 
    • 5.0 stars on DesignRush (57 reviews) 
    • 4.3 stars on Google (76 reviews) 
    • Top clients: Google Pay, YouTube, Walmart, Spotify 
  • Webspero Solutions 
    • 5.0 stars on DesignRush (42 reviews) 
    • 4.9 stars on Google (149 reviews) 
    • Top clients: BetterHelp, Couture Candy, Edelman, Hostinger 
  • Surf 
    • 5.0 stars on DesignRush (39 reviews) 
    • Top clients: KFC, Burger King, SAP, Societe Generale 
  • DevsData  
    • 5.0 stars on DesignRush (37 reviews) 
    • 5.0 stars on Google (12 reviews) 
    • Top clients: Roesier, Webcrafters, Verus, Syncano 
  • Suffescom Solutions Inc 
    • 5.0 stars on DesignRush (36 reviews) 
    • 4.7 stars on Google (90 reviews) 
    • Top clients: Radisson Hotels, Chilis, Class Central, PropertyMe 

Discover more about these and other leading .NET development companies. All of these were carefully selected based on successful projects, industry reputation, customer reviews, and team expertise. Personalize your search and sort companies by location, budget size, hourly rates, and reviews. 

About The Author and Expert Reviewer

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.