10 Best ASP.NET Development Companies In 2025

If you're planning to build a reliable digital product or scale an existing system, chances are you're already looking for a trusted development firm that can turn your vision into reality. ASP.NET is one of the most versatile and high-performing frameworks available — perfect for projects with complex project requirements and strict deadlines.

What Is ASP.NET?

ASP.NET is an open-source web development framework created by Microsoft, designed for building web and mobile applications that are modern, scalable, and secure. Built on the .NET platform, it allows developers to create dynamic websites, APIs, custom web platforms, and enterprise systems using languages like C# and VB.NET.

Thanks to its robust performance, security features, and seamless integration with Microsoft’s ecosystem (Azure, SQL Server, Visual Studio), ASP.NET remains a go-to choice for businesses looking for innovative solutions that align with their business needs in 2025.

Why Choosing the Right ASP.NET Development Company Matters

But here’s the challenge: finding the right technology company isn't always easy. The market is full of providers, but not all of them specialize in delivering seamless, secure, and scalable results. Choosing the wrong partner can lead to missed deadlines, poor code quality, or even project failure.

To help you make the right choice, SCAND has compiled a list of the 10 best ASP.NET development companies in 2025. These teams have proven track records, solid portfolios, and the ability to deliver solutions tailored to your business needs — whether you're launching a SaaS product, building an internal system, or outsourcing complex backend development.

SCAND

Founded: 2000

Employees: 250+

Minimum Project Size: $10,000+

SCAND is a well-established software development company with over 20 years of experience delivering custom solutions for clients worldwide. Headquartered in Poland, the company has built a strong reputation for its deep expertise in ASP.NET, .NET Core, and Blazor, offering scalable and secure enterprise-level applications. SCAND serves a wide range of industries including fintech, logistics, healthcare, and e-commerce. With flexible engagement models, transparent workflows, and a highly skilled engineering team, SCAND remains the top choice for businesses looking for a reliable ASP.NET development partner in 2025.

ELEKS

Founded: 1991

Employees: 2000+

Minimum Project Size: $50,000+

ELEKS is a software development company, with over 30 years of experience in delivering advanced IT solutions. The company provides robust ASP.NET-based services, including systems powered by big data, IoT, and analytics. ELEKS works with clients from the Fortune 500 list and is known for its mature development processes and consistent quality. With flexible Agile practices and scalable teams, ELEKS is well-equipped to handle complex, large-scale projects across various industries.

Iflexion

Founded: 1999

Employees: 850+

Minimum Project Size: $10,000+

Iflexion is an international IT company with over 20 years of experience, specializing in web development and digital transformation. The company offers a broad range of ASP.NET services, including enterprise portals, B2B systems, and eCommerce platforms. With strong engineering practices and transparent project management, Iflexion delivers consistent results for clients around the globe, including Shell, Toyota, and Adidas.

Intellectsoft

Founded: 2007

Employees: 350+

Minimum Project Size: $25,000+

Intellectsoft is a global software development company with offices in the U.S., UK, and Eastern Europe, serving enterprise clients and fast-growing businesses. In the ASP.NET domain, the company delivers custom-built, enterprise-grade solutions — from internal business systems to full-scale digital transformation initiatives. Intellectsoft is known for its focus on security, scalability, and deep integration with client infrastructures.

Belitsoft

Founded: 2004

Employees: 400+

Minimum Project Size: $10,000+

Belitsoft is a trusted outsourcing provider from Eastern Europe, delivering custom software solutions for healthcare, education, and enterprise sectors. The company leverages ASP.NET and .NET Core to build tailored platforms — from eLearning systems and telemedicine apps to CRM and business tools. Known for flexibility, clean code, and transparent communication, Belitsoft is a popular choice among clients in the U.S. and Europe.

SaM Solutions

Founded: 1993

Employees: 800+

Minimum Project Size: $25,000+

SaM Solutions is an international IT company with offices in Germany, the U.S., and Eastern Europe. The company specializes in enterprise-grade development, using ASP.NET and .NET technologies to deliver eCommerce platforms, ERP systems, and IoT applications. SaM Solutions works with global brands like SAP and Siemens, ensuring high engineering standards and compliance with strict European quality and security regulations.

Itransition

Founded: 1998

Employees: 3000+

Minimum Project Size: $25,000+

Itransition is a global IT services provider with over 25 years of experience and a development team of more than 3000 professionals. The company delivers full-cycle ASP.NET development, including business applications, enterprise portals, document management systems, and BI solutions. With solid architecture, DevOps integration, and scalable teams, Itransition handles complex projects for both midsize and global enterprises.

Oxagile

Founded: 2005

Employees: 500+

Minimum Project Size: $25,000+

Oxagile is a tech company specializing in media, AdTech, and video streaming solutions. Leveraging ASP.NET and the broader .NET ecosystem, Oxagile builds high-load platforms with real-time analytics, AI integration, and adaptive interfaces. Their clients include Discovery, Vodafone, and Kaltura. With mature processes and strong technical expertise, Oxagile is known for its ability to respond quickly and effectively to evolving client needs.

Altoros

Founded: 2001

Employees: 400+

Minimum Project Size: $50,000+

Altoros is a U.S.-based software development company with a strong engineering team and focus on enterprise-grade solutions. Using ASP.NET and cloud technologies, Altoros delivers robust platforms for industries such as finance, insurance, logistics, and telecom. The company combines .NET expertise with a DevOps mindset and high-availability architectures, making it an ideal partner for large and fast-scaling businesses.

Radixweb

Founded: 2000

Employees: 650+

Minimum Project Size: $10,000+

Radixweb is an India-based company with over 20 years of experience in custom software development. The company uses ASP.NET to deliver ERP, CRM, and cloud-based solutions tailored to both SMBs and enterprise clients. Known for its strong cost-to-quality ratio, Radixweb adapts to diverse business needs and provides end-to-end technical support throughout the project lifecycle.

Conclusion

Choosing the right ASP.NET development company can make a significant difference in the success of your digital product — whether you're building from scratch or scaling an existing system. The companies featured in this list have proven their capabilities through years of experience, industry-specific expertise, and strong client partnerships.

Each of them brings something valuable to the table — from deep technical knowledge and flexible collaboration models to a clear understanding of business goals.

Each company on this list brings unique strengths, and the right choice will depend on your specific goals, budget, and project requirements. At SCAND, we combine deep ASP.NET expertise, a flexible collaboration approach, and years of experience delivering custom solutions across various industries. We’re always ready to support your next project — whether it’s a lightweight MVP or a complex enterprise system.