10 Popular .NET Development Companies in Vietnam (2026)

.NET is a popular Microsoft cross-platform development platform for building web apps, APIs, enterprise systems, etc., using languages such as C#, F#, and Visual Basic. However, building a reliable .NET app requires experience with ASP.NET Core, databases, cloud services, etc. Therefore, many businesses look for experienced .NET developers or development companies to build, modernize, and maintain their applications.

In this article, we will compare 10 .NET development companies in Vietnam in terms of their .NET capabilities, key services, strengths, and industry experience to help you narrow down the best options for your project.

How We Selected These .NET Development Companies

We evaluated each company based on these criteria:

• .NET expertise: Experience with C#, ASP.NET Core, modern .NET, Azure, APIs, and related technologies.
• Relevant projects: Proven .NET case studies, client work, or modernization experience.
• Client reputation: Independent reviews, ratings, and long-term client feedback.
• Engineering capability: Team size, technical depth, QA, DevOps, and cloud expertise.
• Vietnam presence: An established development team or delivery center in Vietnam.
• Project fit: Suitability for SaaS, enterprise systems, dedicated teams, fintech, or legacy modernization.

Here is the company list:

>> Read more:

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Relia Software

Relia Software is a custom software development company based in Ho Chi Minh City. They have delivered more than 300 applications across various industries. The company has over 10 years of .NET experience, covering custom application development, legacy modernization, web, mobile, AI, and DevOps. With a team of 51–200 people, Relia is a good fit for startups and mid-sized businesses that need support from product planning through launch.

Key Services:

• Custom .NET application development
• ASP.NET Core web development
• .NET API development and integration
• Legacy .NET modernization
• SaaS development with .NET
• Cloud-native .NET development
• Offshore software development

Unique Strength: Relia Software has hands-on experience with both new .NET products and legacy modernization. They have the WhiteCoat project, which shows their experience on a .NET Core backend, as well as Codapay, a payroll platform used as a case study for modernizing older .NET systems.

Industries: Fintech, Healthcare, eCommerce, Education, Real Estate, Travel, Fitness, Social Media, Logistics, Manufacturing.

Saigon Technology

Established in 2012, Saigon Technology is an ISO-certified software development company with more than 400 engineers across Vietnam. Its technical expertise includes .NET Core, Java, Angular, ReactJS, AWS, and Azure, supported by ISO 9001 and ISO 27001 standards. The company is a strong option for businesses looking to build or scale offshore .NET teams.

Key Services:

• Custom .NET software development
• ASP.NET web application development
• Dedicated .NET development teams
• Software maintenance and modernization
• API and backend development
• Cloud-based software development

Unique Strength: The main advantage is team capacity. Saigon Technology can provide a larger pool of dedicated .NET engineers, along with QA and project management resources, for companies that need to scale an offshore development team.

Industries: Fintech, Banking, Financial Services, Transportation & Logistics, Manufacturing, Construction, Real Estate, eCommerce, Business Software.

Orient Software

Orient Software has been developing software since 2005 and has more than 300 engineers and serves over 200 clients worldwide. Its .NET experience includes projects using .NET, Azure, SQL Server, and Angular. The company also has offices in Da Nang, Hanoi, Hue, Singapore, and Japan, and runs Neurond, a separate data and AI business.

Key Services:

• Custom .NET software development
• ASP.NET web development
• .NET mobile development with .NET MAUI
• API development and integration
• Cloud-native .NET development
• .NET application modernization and migration

Unique Strength: Orient stands out for combining application modernization with flexible team models. Their DEKRA Denmark project, for example, involved modernizing legacy systems with .NET, Azure, SQL Server, and Angular.

Industries: Finance, Healthcare, Education, eCommerce, Logistics.

Enlab Software

Enlab Software is an offshore development company based in Da Nang and focused on custom enterprise software. Its .NET team works with multi-tier systems, microservices, and cloud-based architectures, alongside technologies such as Node.js, Python, Angular, React, Azure, and AWS. With a smaller team, Enlab mainly works with startups, SMEs, and IT consulting companies in the US, UK, Australia, and Europe.

Key Services:

• Custom .NET application development
• ASP.NET web development
• Cloud-based .NET applications
• Microservices development
• Dedicated .NET teams
• Staff augmentation

Unique Strength: Enlab has several public .NET case studies rather than simply listing the technology as a capability. These include an ASP.NET flooring procurement system, a .NET procurement application, and a recruitment marketplace built with C# and .NET Core.

Industries: Real Estate, Construction, Education, Recruitment, Procurement, Marketplaces, ERP, Data Management.

NashTech

Operating in Vietnam since 2000, NashTech has more than 2,000 technical experts across major development centers in Ho Chi Minh City and Hanoi. The company has strong experience with .NET and Microsoft technologies and was the first company in Vietnam assessed at CMMI Level 5 version 2.0. 

Key Services:

• Custom software development
• .NET application modernization
• Cloud migration and Azure development
• Enterprise system integration
• Application management and support
• Quality engineering and testing

Unique Strength: NashTech has experience running large, long-term modernization programs. Its Lowell project used .NET Core, microservices, and Azure, with the delivery team reaching up to 110 people during the program.

Industries: Banking & Finance, Insurance, Retail & Consumer, Logistics & Supply Chain, Education, Technology & SaaS.

TMA Solutions

TMA Solutions is one of the largest software outsourcing companies in Vietnam, with around 4,000 engineers serving clients in 30 countries. The company follows standards such as CMMI Level 5, TL 9000, ISO 27001, and Agile/Scrum, ensuring quality products for clients. With nearly 30 years of experience and offices in several global markets, TMA is a strong fit for large and complex software projects.

Key Services:

• Microsoft and .NET software development
• Enterprise application development
• Cloud and Azure development
• Software testing
• DevOps
• Software maintenance and support

Unique Strength: TMA is suited to projects where .NET development needs to sit inside a large multidisciplinary engineering program. Its expertise extends beyond Microsoft software into telecom, fintech, healthcare, automotive, IoT, AI, and embedded technology.

Industries: Telecom, Finance & Insurance, Healthcare, Logistics & Transportation, eCommerce & Retail, Automotive.

KMS Technology

KMS Technology has its development centers in Ho Chi Minh City and Da Nang, with more than 1,000 engineers. They have used .NET in large healthcare and SaaS platforms such as Clearwave. With strong roots in both the US and Vietnam, KMS Technology is a good fit for North American companies looking for an experienced offshore development partner.

Key Services:

• Software product engineering
• Application modernization
• Cloud and DevOps
• Systems and integration
• Quality engineering and test automation
• Dedicated engineering teams

Unique Strength: KMS combines software development with particularly strong QA and product engineering capabilities. Its portfolio also includes moving Brightree from legacy VB/ASP toward React and C#.NET and building a healthcare SaaS platform with .NET, C#, Azure, and Kubernetes.

Industries: Healthcare & Life Sciences, Financial Services, High-Tech, Insurance, Logistics & Supply Chain, Manufacturing, Retail & Consumer Goods, Private Equity.

FPT Software

FPT Software works with the wider Microsoft ecosystem at enterprise scale. Its partnership with Microsoft spans more than 25 years, with expertise across Azure, Microsoft 365, Power Platform, Dynamics 365, cloud modernization, security, data, and AI. FPT reports more than 3,000 Microsoft certifications and holds Microsoft partner designations covering areas such as Digital & App Innovation and Azure infrastructure.

Key Services:

• Microsoft application development and modernization
• Azure cloud transformation
• Enterprise application integration
• Microsoft Power Platform development
• Dynamics 365 services
• Cloud, data, AI, and managed services

Unique Strength: FPT is the strongest fit here for very large Microsoft-based transformation programs. In 2026, Microsoft named FPT the first Enterprise System Integrator partner in Southeast Asia to achieve Frontier Partner status.

Industries: Automotive, Aviation, Banking & Financial Services, Healthcare, Manufacturing, Energy, Retail, Consumer Goods, and other enterprise sectors.

Synodus

Synodus has more than 300 employees in Vietnam and also operates an office in Singapore. The company provides custom web and mobile development, .NET and ASP.NET development, blockchain, data analytics, and low-code services. Synodus mainly uses fixed-cost pricing and serves clients in industries such as finance, banking, and healthcare, which makes it a good fit for businesses that want clearer budget control.

Key Services:

• Custom software development
• .NET backend development
• Web and mobile application development
• Enterprise software development
• Cloud and microservices development
• Dedicated development teams

Unique Strength: Synodus has a notable concentration of experience in banking and financial systems, including projects that involve high transaction volumes, core banking integration, security controls, and microservices.

Industries: Financial Services, Healthcare, Public Sector, Travel & Transportation, Retail, Real Estate, Manufacturing & FMCG.

Adamo Software

Adamo Software is a Hanoi-based custom software company with around 170 developers and 300 completed projects. Its wider development practice covers custom software, web apps, SaaS, cloud and DevOps, while current engineering work includes C#, .NET 8, ASP.NET Core, Entity Framework Core, SQL Server, REST APIs, microservices, Docker, and CI/CD.

Founded in 2018 and based in Hanoi, Adamo Software is a mid-sized IT outsourcing company with more than 100 team members. Its outstanding services include mobile app development, web development, AI solutions, and full-cycle software development. The company also holds ISO 27001:2022 certification, making it a good fit for startups and SMBs, especially in travel and hospitality.

Key Services:

• Custom software development
• Web application development
• SaaS development
• Dedicated development teams
• Cloud and DevOps
• Application maintenance and scaling

Unique Strength: Adamo is useful when a project needs .NET alongside a wider product stack, rather than a Microsoft-only development team. The company has 170 developers, 300 completed projects, and clients across 30 countries.

Industries: Travel & Hospitality, Healthcare, Food & Beverage, Logistics, eCommerce & Retail, Finance.

Benefits of .NET Development

.NET is widely used for enterprise software, SaaS platforms, APIs, cloud applications, and other systems that need to remain stable as they grow. Its main benefits include:

• Cross-platform development: Modern .NET runs on Windows, Linux, and macOS, so teams can build applications for different environments with one technology stack.
• Strong performance: ASP.NET Core is built for high-performance web applications and APIs, making it suitable for systems that handle large volumes of users or requests.
• Microsoft ecosystem integration: .NET works closely with Azure, SQL Server, Microsoft 365, Entra ID, and other Microsoft services used by many enterprises.
• Long-term support: Microsoft regularly releases supported .NET versions, giving businesses a clear path for updates, security patches, and application maintenance.
• Large development ecosystem: C#, Visual Studio, NuGet, testing frameworks, and mature libraries give developers a wide range of tools for building and maintaining software.
• Good fit for modernization: Companies with older .NET Framework applications can gradually move to modern .NET instead of replacing the entire system at once.

How to Choose a .NET Development Company in Vietnam?

Before choosing a company, check these areas:

• Relevant .NET experience: Look for proven work with C#, ASP.NET Core, modern .NET, APIs, microservices, and the technologies your project needs.
• Similar project experience: Review case studies in your industry or with similar products, such as SaaS platforms, enterprise systems, fintech applications, or legacy modernization.
• Azure and cloud skills: If your system will run on Microsoft Azure, check experience with services such as Azure App Service, Azure Functions, Azure SQL, Service Bus, and Kubernetes.
• Legacy modernization capability: For older .NET Framework systems, choose a team that understands migration planning, dependency upgrades, database changes, and phased modernization.
• Engineering practices: Ask about code reviews, automated testing, CI/CD, security, monitoring, and how the team handles production issues.
• Team structure: Confirm who will work on the project, including senior .NET developers, QA engineers, DevOps specialists, business analysts, and project managers where needed.
• Communication and engagement model: Compare dedicated teams, staff augmentation, and project-based delivery to find the model that fits your internal team.
• Pricing and total cost: Do not compare hourly rates alone. Consider team seniority, project management, QA, cloud costs, maintenance, and the amount of rework the project may require.

>> Read more: Keys to Successfully Hiring ASP.NET Developers

Conclusion

Vietnam has a strong pool of .NET development companies, from focused engineering teams to large enterprise outsourcing providers. The best choice depends on what you need, whether that is legacy modernization, SaaS development, Azure cloud expertise, a dedicated .NET team, or support for a large enterprise system.

Before making a decision, compare each company's real .NET experience, relevant case studies, engineering practices, team structure, and project fit. A provider that matches your technical needs and delivery model will usually be a better choice than simply selecting the largest or cheapest company.

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