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
All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.
UX design and research for brain change, aging, and care
We design easy-to-use products, websites, and apps for AgeTech, brain change, and care. We bring specialized user experience expertise to founders, product teams, and MarCom leaders. If you're building for older adults, care partners, and the professionals who support them, we should talk...
Top Services:
UI/UX Design
Web Design
Location
Austin, Texas
Number of Employees
Under 49
Average Hourly Rate
$195/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
7 Projects Listed
Slide UX Services
UI/UX Design
Web Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
A Place for Mom
SeniorAdvisor
CareGivers
Youngtimers
Rare Remy Foundation
LifeFile
MedCognition
NNOXX
KindHealth
Deployed Medicine
Data sourced from the agency's DesignRush profile
Slide UX Reviews & Testimonials
Frank Duenas, MS Director, Digital Experience at ICF
5.0★
UI/UX Design Review from Frank Duenas, MS
Slide UX has been such a pleasure to work with. The team deeply understands our needs and provides very thoughtful solutions, insights, and analysis. They intimately understand the uniqueness of our industry and our business objectives. I look forward to the next opportunity to work with them.
John Miller VP, Product and Technical Delivery at Neology
5.0★
UI/UX Design Review from John Miller
We had the pleasure of working with Slide UX on a recent project requiring deep user engagement and thoughtful design. Much of this work was particularly tricky, as the workflows were for expert users in a complex system, and the focus was ensuring users can do their work quickly and with a high degree of accuracy.Their team expertly helped us conduct workshops to gather insights from end users, identifying pain points and refining complex requirements. Their ability to translate these discussions into clear, actionable designs and wireframes was invaluable, ensuring that the final deliverables were both highly usable and aligned with our needs.Beyond their technical expertise, Slide UX consistently demonstrates exceptional professionalism and responsiveness. They collaborated seamlessly with our team for about a year, maintained clear communication throughout the process, and consistently delivered high-quality work on schedule. Their keen eye for detail and ability to create a set of cohesive design elements across our larger application suite further strengthened the outcome. We highly recommend them to any organization looking for smart, user-focused design solutions.
Dane Koch UX Designer at SolarWinds
5.0★
UI/UX Design Review from Dane Koch
As a UX designer at SolarWinds, I had the opportunity to work closely with the team at SlideUX during the redesign of our company website, and I couldn't be more impressed with their professionalism and expertise. From the outset, their team demonstrated a clear understanding of our goals, offering valuable insights tailored to our business needs and our users' expectations. They consistently delivered high-quality work, providing detailed audits, wireframes, mockups, and site maps aligned perfectly with our vision. The professionalism and attention to detail were evident at every stage, making the entire process seamless and efficient.One of the biggest challenges we faced during the project was our evolving company strategy, which often led to shifting priorities and new direction mid-project. Despite these hurdles, SlideUX was incredibly adaptable. Their team not only met each new challenge with a solution-oriented mindset but also communicated proactively with our internal team to ensure that every change was integrated smoothly into the design. Whether it was refining the user experience for a newly prioritized feature or adjusting the visual language to better reflect our updated branding, SlideUX's ability to pivot while maintaining design integrity was invaluable.Throughout the process, SlideUX didn't just design for us they also took the time to consult with our internal UX team, offering mentorship and sharing best practices. This collaboration helped strengthen our own design capabilities and ensured we were aligned with modern UX standards. The final product is a sleek, modern website with a much-improved user journey that is intuitive, engaging, and aligned with our broader business goals. Thanks to SlideUX, we now have a user experience that not only looks great but also performs seamlessly, setting a strong foundation for future growth.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
AI-Driven SEO & Web Solutions That Grow Businesses
SITE IT NOW is a leading AI-driven SEO and web development agency specializing in custom websites, mobile apps, digital marketing, and secure hosting. We help businesses rank higher, get discovered in AI search, generate more leads, and accelerate growth...
Top Services:
Web Design
Web Development
Mobile App Development
SEO
eCommerce Development
Show more
Location
Chicago, Illinois
Number of Employees
50 - 99
Average Hourly Rate
$25/hr
Minimal Budget
Under $1,000
Portfolios Count
6 Projects Listed
SITE IT NOW Services
Web Design
Web Development
Mobile App Development
SEO
eCommerce Development
WordPress Website Design
Software Development
Digital Marketing
AEO
Social Media Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
AviaChi
South West Collision
Arizona Tax Advisors
Just For You Entertainments, LLC
Bullitt Automotive
Data sourced from the agency's DesignRush profile
SITE IT NOW Reviews & Testimonials
Barbara Schmal Owner/Instructor at Real Estate Training School
5.0★
Web Design Review from Barbara Schmal
I decided to go with Site It Now because they are in Chicago IL and I am in Florida. I wanted a website developer in the US. I checked out their website and was impressed with the information I found. I am very pleased with my website and especially pleased with how they communicate with their customers. A real phone call, text, email all day every day until the project was completed.
Eddie Lebron Owner at Just 4 U Foto Booths
5.0★
Web Design Review from Eddie Lebron
SITE IT NOW has been nothing but the best to us. We made the decision to go with them because of the primary reviews they had but they have surpassed our expectation with the amount of Awesome customer services they have provided our company. Richard has been so attentive to us. He is so responsible in keeping us updated throughout the whole process. We feel we gained not only good service with them but a friendship. We definitely recommend site it now. They go above and beyond your expectations
Eric Skaff owner at Arizona Tax Advisors
5.0★
WordPress Website Design Review from Eric Skaff
very responsive and easy to work with!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
VerifiedVerified by the DesignRush team for authenticity and credibility.
Full-Cycle IoT and Software Development company
We deliver cutting-edge, scalable, and fully functional IoT hardware and software products and ecosystems that help clients achieve their specific objectives...
Top Services:
IoT
Software Development
Mobile App Development
AI Development
Big Data Analytics
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Location
California City, California
Number of Employees
500 - 999
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
24 Projects Listed
Yalantis Services
IoT
Software Development
Mobile App Development
AI Development
Big Data Analytics
IT Services
Cybersecurity
Staff Augmentation
Cloud Consulting
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
RAKwireless
Toyota Tsusho
KPMG
Healthfully
Orbis Systems
Lifeworks
Scholz Databank
123 Sourcing
Truhoo
Data sourced from the agency's DesignRush profile
Yalantis Reviews & Testimonials
Sergei Lishchenko Director of Digital Experience and Innovation at Orbis System
5.0★
Fintech Review from Sergei Lishchenko
The exception team the client collaborated with brought in fresh ideas and innovative technologies previously unfamiliar to the client. For example, with Yalantis' guidance, the client's developers explore the Go language. The primary reason the client chose Yalantis is its strong organizational and project management skills. It's not just about the developers; Yalantis provides a comprehensive support framework, ensuring that a project manager is consistently present. (Verified via email)
Jason Jung Senior engineering manager at Zillow
5.0★
Software Development Review from Jason Jung
Yalantis functions as an integral scrum team, supporting the development teams of a real estate firm. It created renovation project management tools that encompass a web app, a mobile app, and a backend system. Thanks to Yalantis, the client expanded development capabilities and achieved key short-term goals. Its quick integration was pivotal in launching various projects. Beyond delivering top-notch work, Yalantis emphasizes a culture that prioritizes the customer's needs. (Verified via email)
Roy D Partner at RAKwireless
5.0★
Outsourcing Review from Roy D
An IoT manufacturer teamed up with Yalantis to craft an application, enabling users to manage their devices more efficiently. Utilizing Node.js and basing the architecture on Circulus, Yalantis delivered commendable outcomes. It is responsive to any development challenges, offering swift resolutions. The client appreciates Yalantis' proactive stance, impressive technical expertise, and practical solution suggestions. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
One System. One Provider. Real Leads For Small Businesses.
Norzer is a Louisiana-based digital growth partner for small businesses. We build and manage WordPress websites, hosting, security, local SEO, and PPC, all under one roof. No vendor finger-pointing, no disconnected tools. One accountable system built to generate real leads...
Top Services:
WordPress Website Design
SEO
Web Development
Web Design
Digital Strategy
Show more
Location
Baton Rouge, Louisiana
Number of Employees
Under 49
Average Hourly Rate
$75/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
4 Projects Listed
Norzer Services
WordPress Website Design
SEO
Web Development
Web Design
Digital Strategy
PPC
Digital Marketing
Business Consulting
Digital Services
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Mountain View Home Remodeling
Santa Year Round
SFC Construction
LA Dental Clinic
Birdies House Lifting
Coleson Corp
Happy Roof
Mizak & Pacetti
Priority Aminos
Stone Harp Analytics
Data sourced from the agency's DesignRush profile
Norzer Reviews & Testimonials
Robyn Murphy Vice President at Birdie's House Lifting
5.0★
Web Design Review from Robyn Murphy
We've had a great experience working with Ryan! He is always responsive, helpful, and quick to address any questions that come up. It's so nice working with someone who is easy to reach, reliable, and genuinely cares about his clients. We really appreciate the great service and would absolutely recommend Norzer to anyone looking for reliable web design, hosting and support!
Erin DeCaprio Marketing at By Light Professional IT Services
5.0★
Web Design Review from Erin DeCaprio
Norzer has been an ideal partner in building our online presence, even given our almost-impossibly short timeline. They are creative and flexible, friendly and professional. Communication was clear and timely, which really helped our project to go smoothly. We are using them for our next website project as well, and would highly recommend!
Denny Kuruklis CEO & Founder at Virdual IT
5.0★
Web Design Review from Denny Kuruklis
Ryan's team handled our Chicago company's WordPress redesign from start to finish, and the SEO groundwork was baked in from day one. What really impressed us was that questions got answered fast, even late at night. As an IT company ourselves, we don't say this lightly: these guys know what they're doing. Highly recommend for anyone who wants a site built right and a team that actually shows up.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Zealous System is an AI-powered technology partner delivering custom software, AI solutions, web and mobile apps, and enterprise platforms. As a software solutions provider, we serve startups and enterprises across healthcare, FinTech, logistics, education, manufacturing, and more...
Top Services:
Software Development
Product Design
Web Development
eCommerce Development
WordPress Website Design
Show more
Location
Lewis Center, Ohio
Number of Employees
50 - 99
Average Hourly Rate
$20/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
22 Projects Listed
Zealous System Services
Software Development
Product Design
Web Development
eCommerce Development
WordPress Website Design
Mobile App Development
AI Development
IoT
Blockchain
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Kerson Wallaw Consulting Firm Inc
Neil Patel Digital
Barber's Connect
Data sourced from the agency's DesignRush profile
Zealous System Reviews & Testimonials
Grzegorz Grabczak Chief Executive Officer at DIGITAL-IMAGES
5.0★
Software Development Review from Grzegorz Grabczak
We worked with Zealous System on an AI-powered fraud triage solution for one of our clients in the Europe financial services sector. The project involved a complex fraud investigation workflow where analysts were handling a large number of alerts and gathering information from multiple systems. Zealous System worked closely with us to understand the requirements, existing processes and expectations of the end client before moving into development. The team developed an AI-powered fraud triage agent that brings relevant information together, helps prioritise alerts and provides explainable recommendations while keeping human analysts involved in important decisions. What I appreciated was the team's ability to understand both the business and technical sides of the project. Communication was consistent, and they were responsive when requirements evolved during development and testing. The solution helped streamline the investigation process and reduce the amount of repetitive manual work involved in reviewing fraud alerts. Overall, we had a positive experience working with Zealous System. They were a reliable technology partner for us on this project, particularly given the complexity of introducing AI into a financial services environment.
DIPAK VAIDH Review from Google
1.0★
DIPAK VAIDH's Review Sourced from Google
I visited Zealous System on 16th June 2025 for the walk-in interview announced on LinkedIn for interns/freshers in Python, PHP, WordPress, .Net, and QA roles. Despite clearly stating it was open for freshers, upon arrival, all Python candidates, including myself and my sister, were told they only accept those with prior experience, as interns are directly placed on live projects. This information was never mentioned in the post. The company blamed the marketing team for the misleading post. This experience wasted our valuable time, energy, and travel expenses. I urge the company to coordinate better internally and post accurate job/internship information to avoid misguiding freshers who genuinely seek opportunities.
Ravi Prajapati Review from Google
5.0★
Ravi Prajapati's Review Sourced from Google
Zealous System is outstanding when it comes to AI development! Their team helped us build a smart, AI-powered software solution that completely transformed how we manage data and customer interactions. They explained complex AI concepts in simple terms and delivered a solution that works flawlessly. From planning to post-launch support, everything was smooth and professional. Highly recommended if you're looking for reliable AI experts!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Social Media & Paid Ads That Turn Followers Into Customers Not Just Vanity Metrics
VAW Media is a small (team of 3) full-service social media & paid advertising agency building strategy-first systems for real growth not vanity metrics. We manage organic content, Meta & Google Ads, and lead generation for businesses nationwide, turning followers and clicks into paying customers...
Top Services:
Social Media Marketing
Advertising
Content Marketing
Digital Marketing
Video Marketing
Show more
Location
Brentwood, Tennessee
Number of Employees
Under 49
Average Hourly Rate
$100/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
6 Projects Listed
VAW Media Services
Social Media Marketing
Advertising
Content Marketing
Digital Marketing
Video Marketing
Media Buying
Digital Strategy
Email Marketing
eCommerce
Digital Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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
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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 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. 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 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
Website Express is an affordable website hosting, design, video, and marketing firm located in Kalispell, Montana. Our team is dedicated to providing website hosting, design, and media services to clients across the nation, and we're passionate about helping businesses of all kinds develop their brands and...
Top Services:
Web Design
Web Development
eCommerce Development
Branding
Logo Design
Show more
Location
Kalispell, Montana
Number of Employees
Under 49
Average Hourly Rate
$99/hr
Minimal Budget
$1,000 - $10,000
Website Express Services
Web Design
Web Development
eCommerce Development
Branding
Logo Design
Print Design
Digital Marketing
Social Media Marketing
Email Marketing
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
LHC
MechTech Systems
Glacier National Park Volunteer Association
ColorFast Industries
The Bar W Guest Ranch
Data sourced from the agency's DesignRush profile
Website Express Reviews & Testimonials
Ty Gunion Review from Google
5.0★
Ty Gunion's Review Sourced from Google
Jason and his team, have helped me from day one, with all my business website needs, the web site turned out perfect, comunication was top notch, and I absolutely value our ongoing working relationship!Gunion Interior Systems.
John Clarke Review from Google
5.0★
John Clarke's Review Sourced from Google
Jason and Micah are the best website developers I have ever worked with. They exceeded all of my expectations. Do not hesitate to hire Websiteexpress to develop and maintain your site.
Kyle Fry Review from Google
5.0★
Kyle Fry's Review Sourced from Google
Website Express was extremely easy to work with and very professional. I gave them a very vague idea for my website and what they came up with far exceeded my expectations! They were quick to answer every question I had and very responsive to the minimal adjustments I asked for. I highly recommended Website Express!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
B West Builders is a Los Angeles-based general contracting company specializing in luxury residential remodeling, custom home construction, and high-end commercial renovation projects. The firm provides comprehensive construction services including home remodeling, kitchen and bathroom renovations, home...
Top Services:
Business Consulting
Design Services
Digital Services
UI/UX Design
CRO
Show more
Location
Los Angeles, California
Number of Employees
Under 49
Portfolios Count
1 Project Listed
B West Builders | General Contractors Services
Business Consulting
Design Services
Digital Services
UI/UX Design
CRO
AI Development
Managed Services
Market Research
Creative Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Construction Industry
Design Industry
Real Estate Industry
Data sourced from the agency's DesignRush profile
B West Builders | General Contractors Reviews & Testimonials
sarah rivkin Review from Google
5.0★
sarah rivkin's Review Sourced from Google
We worked with B West Builders on a remodeling project andI would definitely recommend them.They were very organized and always kept us informed about what washappening next. The crew was respectful and clearly experienced.The quality of the work exceeded our expectations .The finished space looks fantastic
Pimchanok Rojrattanachai (Mina) Review from Google
5.0★
Pimchanok Rojrattanachai (Mina)'s Review Sourced from Google
We hired B West Builders to renovate a few areas of our home and they did a fantastic job.What stood out most was how professional and calm they were throughout the entire project.Even when small issues came up,they handled them quickly and without stress.The final results look great and the craftsmanship is excellent
JJ NRK Review from Google
5.0★
JJ NRK's Review Sourced from Google
We had such a great experience with this B West Builders .We remodeled our kitchen and part of our living room, and the difference is incredible.What I appreciated most was how easy they made the whole process.They explained everything clearly, helped us make decisions when we were unsure, and always kept us updated.The crew was friendly and respectful, and the quality of the work really shows.Our house finally feels like the home we always wanted.
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