India has become a prime destination for businesses seeking reliable ASP.NET development outsourcing. Many established companies here offer deep expertise in building robust, scalable applications using the latest Microsoft technologies. These teams consistently deliver high-performance solutions that help enterprises modernize their systems while keeping costs manageable.

What stands out is the combination of technical skill and practical experience these companies bring to the table. From custom web applications to complex enterprise platforms, they focus on creating solutions that drive real business results. Their work often includes seamless integration with cloud services, strong security features, and ongoing support that ensures long-term success.

1. OSKI

OSKI provides ASP.NET development outsourcing in India through practical custom software development and dedicated team models. We handle full-cycle development that covers .NET development, web application development, and IT outsourcing while supporting businesses with digital transformation, cloud migration, and legacy system modernization. Our work regularly includes API integration, React development, and CMS-based solutions, especially as an Umbraco partner, giving us solid experience in e-commerce, healthcare, fintech, edtech, logistics & supply chain, and manufacturing projects.

We build solutions using core technologies such as .NET, Azure, AWS, Node.js, and microservice architecture. This includes AWS Cognito, Okta, MSSQL, AWS Lambda, serverless setups, and integrated AI components when required. We also work with Tailwind, SCORM for LMS, ERP systems, and machine learning features, adjusting to client needs in professional services, retail, and SaaS areas.

Key Highlights:

• Strong expertise in .NET and full-cycle development

• Dedicated team and IT outsourcing delivery models

• Proven Umbraco Gold Partner with deep expertise in complex e-commerce, healthcare, fintech and SaaS solutions

Services:

• ASP.NET development outsourcing in India

• Web application development

• Cloud migration

• Legacy system modernization

• API integration

• Digital transformation

Contact Information:

• Website: oski.site

• Phone: +48571282759

• Email: contact@oski.site

• Address: Kaupmehe tn 7, 10114 Tallinn, Estonia

• LinkedIn: www.linkedin.com/company/oski-solutions

2. Outsource2India

Outsource2India operates as an ISO 9001 certified company focused on ASP.NET development. Quality sits at the center of their process, and they work hard to meet agreed service level expectations for clients mainly in the US and Europe. The company builds applications that stay current with technology while keeping projects at reasonable costs.

Their developers put effort into delivering solutions that match client requirements without unnecessary complications. Projects move forward with attention to detail and steady communication throughout the timeline. Clients turn to this company when they need dependable ASP.NET work that fits their budget and schedule.

Key Highlights:

• ISO 9001:2015 certified operations

• Dedicated focus on quality and SLA compliance

• Experience serving clients in the US and Europe

Services:

• Custom ASP.NET application development

• Web application maintenance and support

• Migration to newer ASP.NET versions

• Integration with third-party systems

Contact Information:

• Website: www.outsource2india.com 

• Phone: 800-594-9501

• Email: info1@outsource2india.com

• Address: 116 Village Blvd, Suite 200, Princeton, NJ 08540

• Linkedin: www.linkedin.com/company/outsource2india

• Twitter: x.com/outsource2india

3. Adreno Technologies

Adreno Technologies works as an offshore ASP.NET development company based in India. The company creates custom .NET applications through its group of experienced developers who handle various project types. They pay close attention to scalability and performance aspects in the solutions they deliver.

Projects at Adreno Technologies often involve building applications that support business growth without major technical hurdles. The team stays current with Microsoft technologies and applies them in practical ways. This approach helps companies get functional software that performs well in real-world conditions.

Key Highlights:

• Offshore development model in India

• Focus on custom .NET applications

• Emphasis on application scalability

• Performance optimization practices

Services:

• Custom .NET application development

• ASP.NET web solutions

• Dedicated offshore development teams

• Application performance tuning

• Legacy system modernization

Contact Information:

• Website: www.adrenotechnologies.com

• Phone: +91 124-421-6492 

• Email: sales@adrenotechnologies.com

• Address: 303B, 3RD Floor, Tower-A, Unitech Cyber Park, Sector-39, Gurgaon

4. Vofox Solutions

Vofox Solutions provides ASP.NET development services from their base in India. The company works across different industries and builds web applications that clients use in various locations including the USA and Australia. Their developers create solutions designed for steady performance and practical use.

The company handles projects that require clean code and functional interfaces. Teams at Vofox Solutions adjust their approach based on what each client needs for their specific industry. This flexibility allows them to support both smaller applications and more complex systems.

Key Highlights:

• Experience across multiple industries

• Development for international clients

• Focus on high-performance web applications

• Skilled developer resources in India

Services:

• ASP.NET web application development

• Custom solution building

• Industry-specific application work

• Application maintenance

• Performance-focused development

Contact Information:

• Website: vofoxsolutions.com

• Phone: +91-484-4049006

• Email: info@vofoxsolutions.com

• Address: Vofox Square, VIP Road, JLN Stadium Metro Station, Kochi, Kerala, India-682017

• LinkedIn: www.linkedin.com/company/vofox-solutions-pvt-ltd

• Facebook: www.facebook.com/vofox

• Twitter: x.com/VofoxS

5. Arham Technosoft

Arham Technosoft offers ASP.NET development services from India. The company builds applications for web, mobile, and desktop environments using their accumulated experience in the field. They create solutions that aim for reliable day-to-day operation.

Projects handled by Arham Technosoft often involve turning business ideas into working software. The team works with ASP.NET to produce applications that clients can use across different platforms. This variety gives businesses options when they need solutions that extend beyond just web interfaces.

Key Highlights:

• ASP.NET development for multiple platforms

• Experience-based approach to project work

• Solutions for web mobile and desktop

• Practical application building focus

Services:

• ASP.NET application development

• Multi-platform solution creation

• Web application projects

• Mobile application support using .NET

• Desktop software development

Contact Information:

• Website: arhamtechnosoft.com

• Phone: (+91) 972 523 3825

• Email: info@arhamtechnosoft.com

• Address: B-406 Synthesis The First, B/h Keshavbaug Party Plot, Satellite, Ahmedabad - 380015, Gujarat

6. Elinsys

Elinsys delivers ASP.NET development services with attention to enterprise applications. The company follows structured processes that cover analysis, design, implementation, testing and system integration. This approach helps create complete solutions from start to finish.

Elinsys works on projects that require careful planning at each stage. Developers apply standard practices throughout the application lifecycle. The company maintains focus on building applications that fit into business operations. Projects move through defined phases without skipping important steps. Communication stays consistent so requirements stay clear from beginning to end.

Key Highlights:

• Full cycle ASP.NET application development

• Enterprise application focus

• Structured project phases

• System integration capabilities

Services:

• Application analysis and design

• ASP.NET implementation work

• Testing and quality checks

• System integration projects

• Ongoing application support

Contact Information:

• Website: www.elinsys.com

• Phone: +91 99749 20002

• Email: info@elinsys.com

• Address: 1108, Phoenix, Vijay Cross Road to Commerce Six Road Lane, Beside Honest Restaurant, Ahmedabad–380009, Gujarat. India

• LinkedIn: www.linkedin.com/company/elinsys

• Facebook: www.facebook.com/elinsys

• Twitter: x.com/elintech_system

• Instagram: www.instagram.com/elintech_system

7. Clarion Technologies

Clarion Technologies works with ASP.NET Core for application development in India. The company builds applications that aim for scalability and balanced performance. Clarion Technologies has experience enhancing existing .NET platforms for different clients.

Clarion Technologies combines development work with attention to quality and efficiency. The company handles projects that require both technical depth and practical results. Developers adjust approaches based on specific business contexts. This flexibility supports various types of enterprise needs in the ASP.NET space.

Key Highlights:

• ASP.NET Core development focus

• Experience with platform enhancements

• Scalable application building

• Balanced quality approach

Services:

• ASP.NET Core application development

• Platform enhancement projects

• Custom enterprise solutions

• Application scalability work

• .NET based system improvements

Contact Information:

• Website: www.clariontech.com

• Phone: +1 (888)-551-0371

• Email: info@clariontech.com

• Address: The Hive, Raja Bahadur Mill Road, Beside Sheraton Grand Hotel, Sangam Vadi, Pune - 411001

• LinkedIn: www.linkedin.com/company/clariontechnologies

• Twitter: x.com/Clarion_Tech

• Instagram: www.instagram.com/clarion_technologies

8. TatvaSoft

TatvaSoft builds custom ASP.NET web applications with attention to backend functionality. The company manages tasks across the full application lifecycle including initial design, quality checks and maintenance. Modern cloud tools like Azure appear in many of their projects.

TatvaSoft handles different stages of application work in sequence. The company integrates backend components carefully so applications run reliably. Projects often include updates and support after initial delivery. This complete process helps keep applications current and functional over time.

Key Highlights:

• Custom ASP.NET web applications

• Full application lifecycle management

• Backend development focus

• Cloud tool integration

Services:

• Custom web application development

• Application design and planning

• Quality assurance processes

• Ongoing maintenance work

• Cloud integration tasks

Contact Information:

• Website: www.tatvasoft.com 

• Phone: +91 960 142 1472

• Email: info@tatvasoft.com

• Address: 1401-1409, RK Empire, 150 Feet Ring Road, Rajkot, Gujarat, 360004

• LinkedIn: www.linkedin.com/company/tatvasoft

• Facebook: www.facebook.com/TatvaSoft

• Twitter: x.com/tatvasoft

9. ManekTech

ManekTech provides experienced ASP.NET developers from India for various software projects. The company works with both traditional and modern development approaches to create applications for web, cloud, IoT, mobile, and desktop environments. Dedicated developer resources help businesses manage their projects according to specific requirements.

ManekTech focuses on practical solutions that fit different application types. Developers handle tasks across multiple platforms while keeping the development process straightforward. The company supports projects that need flexibility in technology choices. This setup allows for work on diverse software needs without unnecessary complications in the workflow.

Key Highlights:

• Experienced ASP.NET developers from India

• Support for multiple application types

• Traditional and modern development methods

• Dedicated developer resources

Services:

• Web application development

• Cloud based application work

• IoT solution building

• Mobile application projects

• Desktop software creation

Contact Information:

• Website: www.manektech.com 

• Phone: +918511428441

• Email: info@manektech.com

• Address: 4th Floor, Timber Point, Prahaladnagar Road, Ahmedabad, Gujarat - 380015

• LinkedIn: www.linkedin.com/company/manektech

• Facebook: www.facebook.com/ManekTech-191482567545069

• Twitter: x.com/manektech

• Instagram: www.instagram.com/manektech

10. SunTec India

SunTec India offers ASP.NET developers who handle modernization of legacy applications. The company works on performance improvements, IIS request pipeline streamlining, and SQL plan optimization. Developers manage transitions to newer cloud native .NET architectures.

SunTec India focuses on updating existing systems while maintaining functionality. The company addresses technical aspects like performance and optimization during modernization projects. Projects include careful handling of legacy components. This process helps applications move forward with current technology without major disruptions.

Key Highlights:

• Legacy application modernization

• Performance enhancement work

• IIS pipeline streamlining

• SQL plan optimization

• Cloud native transitions

Services:

• Legacy system modernization

• Application performance optimization

• Pipeline improvement projects

• Database query optimization

• Architecture transition support

Contact Information:

• Website: www.suntecindia.net

• Phone: +919311468458

• Email: info@suntecindia.net

• Address: Floor 3, Vardhman Times Plaza, Plot 13, DDA Community Centre, Road 44, Pitampura, New Delhi - 110 034, INDIA

• LinkedIn: www.linkedin.com/company/suntecindiadotnet

• Facebook: www.facebook.com/SuntecIndia.net1

• Twitter: x.com/SunTecIndiaNet

11. Radixweb

Radixweb functions as a Microsoft certified .NET development company. The company delivers full-cycle .NET development services with emphasis on industry-specific ASP.NET applications. Projects receive structured handling from initial stages through completion.

Radixweb works on ASP.NET solutions designed for particular industry needs. The company applies .NET capabilities across different project requirements. Development includes attention to how applications fit within specific business contexts. This method supports creation of applications that address defined operational areas.

Key Highlights:

• Microsoft certified .NET development

• Full-cycle service delivery

• Industry-specific ASP.NET applications

• Structured development process

Services:

• Full-cycle .NET development

• ASP.NET application building

• Industry-focused solution work

• Custom .NET projects

• Application lifecycle management

Contact Information:

• Website: www.radixweb.com

• Phone: +91-79-35200685

• Email: biz@radixweb.in

• Address: Ekyarth, B/H Nirma, University, Chharodi, Ahmedabad – 382481 India

• LinkedIn: www.linkedin.com/company/radixweb

• Facebook: www.facebook.com/radixweb

• Twitter: x.com/radixweb

• Instagram: www.instagram.com/radixweb

12. Capital Numbers

Capital Numbers provides dedicated .NET developers for custom application work. The company handles full-cycle custom .NET application development with attention to web and enterprise solutions. Projects focus on creating applications that match specific business requirements.

Capital Numbers supports development of scalable solutions in the .NET space. The company manages different aspects of application creation from start to finish. Developers apply expertise across various project types within the .NET framework. This approach helps deliver functional applications that align with enterprise contexts.

Key Highlights:

• Dedicated .NET developer resources

• Full-cycle custom development

• Web and enterprise solution focus

• Scalable application work

Services:

• Custom .NET application development

• Web solution projects

• Enterprise application building

• Dedicated development support

Contact Information:

• Website: www.capitalnumbers.com

• Phone: +91 33 6799 2222

• Email: info@capitalnumbers.com

• Address: Mani Casadona, Unit No 8E4, Action Area #2 F, New Town, Kolkata 700156, West Bengal, India

• LinkedIn: www.linkedin.com/company/capitalnumbers

• Facebook: www.facebook.com/CapitalNumbers

• Twitter: x.com/_CNInfotech

13. SPEC India

SPEC India supplies ASP.NET developers skilled in web application and web service integration. The company focuses on secure and reliable connections between different systems and APIs. Development work includes careful handling of integration points.

SPEC India works on projects that require stable links across web components. Developers pay attention to security aspects during integration tasks. The company handles various web services within ASP.NET environments. This focus supports applications that need smooth data exchange and consistent operation.

Key Highlights:

• ASP.NET developer expertise

• Web application integration

• Web services and API work

• Secure integration focus

Services:

• Web application integration

• Web services development

• API connection projects

• Secure system linking

• ASP.NET integration work

Contact Information:

• Website: www.spec-india.com

• Phone: +91-79-26404031

• Email: lead@spec-india.com

• Address: SPEC House, Parth Complex, Near Swastik Cross Roads, Navarangpura, Ahmedabad 380009, INDIA

• LinkedIn: www.linkedin.com/company/spec-india

• Facebook: www.facebook.com/SPECINDIA.IT

• Twitter: x.com/infospec_india

• Instagram: www.instagram.com/spec_india

14. Vrinsoft

Vrinsoft gives access to experienced ASP.NET developers from India. The company delivers reliable web applications that emphasize maintainability and performance aspects. Development follows practical approaches to create functional solutions.

Vrinsoft handles ASP.NET projects with focus on long-term application stability. Developers work on applications designed for ongoing use and updates. The company supports creation of solutions that perform consistently in real conditions. This setup fits businesses looking for steady ASP.NET development resources.

Key Highlights:

• Experienced ASP.NET developers from India

• Reliable web application delivery

• Maintainable solution focus

• Performance-oriented development

Services:

• Web application development

• ASP.NET solution creation

• Application maintenance support

• Performance driven projects

Contact Information:

• Website: www.vrinsofts.com

• Phone: +917227906117

• Email: sales@vrinsofts.com

• Address: 707, Elite Business Park, AUDI showroom lane- Shapath Hexa, S G Highway, Ahmedabad – 380060, Gujarat, India

• LinkedIn: www.linkedin.com/company/vrinsoft-technologies-pvt-ltd

• Facebook: www.facebook.com/vrinsofts

• Twitter: x.com/Vrinsofts

• Instagram: www.instagram.com/vrinsofts

15. Kays Harbor

Kays Harbor builds web platforms, APIs, and mobile applications with ASP.NET. The company maintains an in house group of C# and ASP.NET developers who turn ideas into working solutions. Development includes attention to security and performance elements.

Kays Harbor handles projects that involve complex requirements in the ASP.NET environment. The company works on creating platforms and applications that support business functions. Developers apply their skills to different components within each project. This allows for complete solutions that cover web, API, and mobile aspects.

Key Highlights:

• Web platform development

• API creation work

• Mobile application projects

• C# and ASP.NET developer resources

• In house development approach

Services:

• Web platform building

• API development projects

• Mobile app creation

• Custom solution development

• Security focused application work

Contact Information:

• Website: kaysharbor.com

• Phone: + 1-604-670-8646

• Email: contactus@kaysharbor.com

• Address: Plot No I-33, Sector 83 Alpha, IT City, Mohali, SAS Nagar, Punjab 140306

• LinkedIn: www.linkedin.com/company/kays-harbor-technologies-pvt-ltd

• Facebook: www.facebook.com/KaysHarborTech

• Twitter: x.com/kaysharbor

16. Siliconinfo

Siliconinfo offers options to hire ASP.NET developers and goal-oriented programmers for C# .NET development work. The company provides access to dot net software developers who create web applications. These developers focus on building solutions that help websites stand out through unique features and solid functionality.

Siliconinfo connects businesses with knowledgeable programmers experienced in the .NET environment. Development work centers on web applications that receive attention to detail during creation. The company supports projects where custom elements play an important role in the final result. This setup fits situations that call for tailored ASP.NET solutions without standard templates.

Key Highlights:

• ASP.NET developer hiring options

• C# .NET development expertise

• Web application creation focus

• Goal-oriented programming approach

Services:

• Custom web application development

• C# .NET programming projects

• ASP.NET solution building

• Dedicated developer resources

Contact Information:

• Website: www.siliconinfo.com

• Phone: +91-93-2700-1952

• Email: info@siliconinfo.com

• Address: 331-332, Patel Avenue Nr.Gurudwara, S G Road, Thaltej, Ahmedabad - 380059, Gujarat, INDIA

• LinkedIn: www.linkedin.com/in/silicon-valley-infomedia-pvt-ltd

• Facebook: www.facebook.com/people/Siliconvalleyinfomediapvtltd/100064130619363

• Twitter: x.com/PhpSilicon

• Instagram: www.instagram.com/silicon_valley_infomedia

Conclusion

India continues to stand out as a strong choice for ASP.NET development outsourcing. The country offers a solid mix of technical expertise, practical experience, and cost-effective delivery that many businesses find valuable when modernizing their applications or building new ones from scratch.

What matters most is matching the right partner to your specific situation. Some projects need deep cloud integration, others focus on legacy modernization, while a few require tight security and compliance from day one. Taking time to review processes, communication styles, and past work helps avoid common outsourcing headaches and leads to smoother results.

At the end of the day, successful ASP.NET outsourcing comes down to finding a company that listens carefully and delivers consistently. When that alignment happens, the partnership often becomes a long-term advantage rather than just another vendor relationship.