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Top C# Development Companies - Page 4
- 4.8 avg. rating from 55 reviews
Last Updated: August 26, 2026
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847 Companies
List of Top C# Service Providers | Best C# Developers
Qulix is a premier custom software development company renowned for its innovative approach to solving complex digital challenges. Specializing in a wide array of services, including web and mobile application development, IoT solutions, and UX/UI design, Qulix stands as a beacon of technological excellence. Its dedicated team of professionals utilizes a mix of cutting-edge technologies and proven... read more about Qulix
250 - 999
$50 - $99/hr
$25000 - $50000
Poland
Relevant is an international outsourcing software development company dedicated to designing, building, and delivering outstanding products. Our comprehensive services include: Mobile Development Web Development AI Chatbot Development HL7 FHIR Implementation Product Development IoT Software Development SaaS Development UX/UI Design Quality Assurance Product Discovery DevOps Cyber... read more about Relevant Software
50 - 249
$50 - $99/hr
NA
Ukraine
InnovationM is a distinguished mobile app development company with a strong footprint in India, the United Kingdom, and the United States. Specializing in web and cloud technology, software outsourcing for mobile and eCommerce development, web portal development, and location-based services, InnovationM has carved a niche for itself in the tech industry. The company boasts a dynamic team of skille... read more about InnovationM
50 - 249
<$25/hr
$5000 - $10000
India
ISBX is a leading digital agency established in 2003, renowned for its innovative approach to delivering a wide range of services, including creative design, technology solutions, support & staffing, testing and QA, marketing strategies, and mobile application development. The company specializes in creating visually appealing and highly functional websites, developing web-based business solutions... read more about ISBX
50 - 249
$100 - $149/hr
$25000 - $50000
United States
Scalefocus is a premier software development and digital services company established with a mission to propel businesses forward by harnessing the latest technologies and exceptional engineering talent. Recognized as the largest Bulgarian-owned software engineering company, Scalefocus has made a significant impact on a global scale, serving clients in North America, Europe, and the Middle East. T... read more about Scalefocus
250 - 999
$50 - $99/hr
>$100000
Bulgaria
Softermii is a private software development firm that has made a name for itself since its inception. Based in Los Angeles, California, the company has carved out a niche in providing application services tailored to key sectors such as real estate, healthcare, e-commerce, and fintech. Its offering spans across UI and UX design, web and mobile development, DevOps, cybersecurity, and project manage... read more about Softermii
50 - 249
$25 - $49/hr
$25000 - $50000
Ukraine
At SPEC INDIA, we empower businesses with AI-driven innovation in the digital era. Backed by over 36 years of expertise, we deliver bespoke software solutions that drive growth and efficiency. Our commitment to quality, security, and customer success sets us apart, making us a trusted technology partner for organizations across the globe. Ask ChatGPT read more about SPEC INDIA
250 - 999
$25 - $49/hr
$25000 - $50000
United States
Inostudio is a renowned software development company established in 2006, dedicated to delivering high-quality digital solutions to businesses across the globe. Headquartered in Taganrog, Russia, Inostudio specializes in custom software development, web and mobile applications, and IT consulting. The company serves various industries, including healthcare, real estate, retail, and logistics, provi... read more about Inostudio
50 - 249
$50 - $99/hr
NA
Russia
DICEUS stands as a powerhouse in the realm of custom software development, offering tailored solutions that propel businesses forward in the digital age. Renowned for its innovative approach and technical expertise, DICEUS specializes in creating software that perfectly aligns with the unique needs and objectives of its clients, spanning industries from finance to healthcare. With a global presenc... read more about DICEUS
50 - 249
$25 - $49/hr
$10000 - $25000
Poland
Digiteum is a software development company helping healthtech, pharma, healthcare providers, and non-profits solve their most complex technical and operational challenges and drive better healthcare outcomes. Since 2010, we have been working with companies like Sanofi, MSD, OLVG, Diaceutics, MediCapture, Across Health, How Do I?, and the Lymphoma Research Foundation to help them improve patient en... read more about Digiteum
50 - 249
$50 - $99/hr
NA
Poland
Double Coconut is a full-cycle game development studio that specializes in Web3, NFT, and blockchain-based games. With over 12 years of experience, the company has delivered innovative and scalable gaming solutions for industry leaders like EA Sports, WB Games, and Microsoft. Double Coconut offers end-to-end game development, NFT integration, token economies, and play-to-earn ecosystems, leveragin... read more about Double Coconut
50 - 249
$25 - $49/hr
$5000 - $10000
United States
HQSoftware stands as a prominent player in the custom software development landscape, renowned for its commitment to crafting bespoke digital solutions that perfectly align with the unique visions and requirements of its global clientele. With a rich legacy of innovation and expertise, this company excels in delivering a wide array of services, including IoT solutions, VR & AR applications, and en... read more about HQSoftware
50 - 249
$25 - $49/hr
$10000 - $25000
Estonia
Wildnet Technologies is an 2006 estd. best digital marketing agency in noida. Innovational software development outsourcing giant. We develop amazingly creative software solutions, online custom web applications, Native and Hybrid iOS and Android Mobile apps, Salesforce and MS Dynamics CRM implementation and customization. We also serve companies with SEO, PPC and other digital marketing services.... read more about Wildnet Technologies Pvt. Ltd.
50 - 249
$25 - $49/hr
NA
India
500Tech is a robust front-end development agency known for its expertise in creating visually stunning and highly interactive web applications. Specializing in the latest front-end technologies, it delivers cutting-edge solutions that ensure a seamless user experience across all devices. With a strong focus on modern JavaScript frameworks and libraries, 500Tech empowers businesses to build dynamic... read more about 500Tech
10 - 49
$150 - $199/hr
>$100000
Israel
Our onshore team specializes in designing and developing secure, reliable, and scalable software solutions. Our clients chose us because we're kind, flexible, and kick-ass. Let's find out if we're the right fit for you! read more about Troy Web Consulting
10 - 49
$150 - $199/hr
$50000 - $100000
United States
We build web & mobile apps for leading brands We're a nearshore software development agency with 15+ years of experience scaling teams and creating digital products for leading brands like Telefonica, PwC, Tony Robbins, Branch, PlayOn, and Macmillan Learning. Backed by Nortal’s global presence and knowledge base, we combine technical excellence with agility and scalability to deliver produ... read more about Uruit
250 - 999
$50 - $99/hr
>$100000
Uruguay
Velvetech is a dynamic and innovative custom software development company that specializes in delivering tailored technology solutions designed to meet the unique needs of businesses across various industries. With a strong emphasis on collaboration and efficiency, Velvetech harnesses the power of cutting-edge technologies to offer a wide range of services, including mobile and web application dev... read more about Velvetech
50 - 249
$50 - $99/hr
$25000 - $50000
United States
appsolute GmbH stands out as a premier app development agency dedicated to crafting bespoke mobile and smart TV applications that drive digital transformation across industries. With a deep-rooted commitment to excellence and innovation, the agency leverages a blend of cutting-edge technologies and creative design thinking to deliver user-centric solutions that excel in functionality and aesthetic... read more about appsolute GmbH
10 - 49
$50 - $99/hr
$5000 - $10000
Germany
Blue Whale Apps, established in 2006 and headquartered in Boca Raton, Florida, is a leading provider in web and mobile app development. The company excels in delivering comprehensive digital transformation engineering services, including UI & UX design and app development, tailored to meet the needs of businesses across various industries. Known for creating next-generation digital products and ex... read more about Blue Whale Apps
10 - 49
$100 - $149/hr
>$100000
United States
CHI Software, founded in 2006, has grown impressively from a small team to over 800 specialists with offices in Ukraine, Japan, Poland, Spain, the US, and the Republic of Cyprus. This global technology leader focuses on delivering complex solutions in cloud computing, big data, artificial intelligence (AI), and the Internet of Things (IoT). It offers a wide range of services, including web and mob... read more about CHI Software
250 - 999
$50 - $99/hr
>$100000
Ukraine
Commencis is a creative powerhouse that excels in transforming ideas into digital realities. As a robust design and development studio, it stands out for its ability to blend stunning designs with cutting-edge technology, crafting mobile apps, websites, and digital products that are not only visually appealing but also highly accessible and functional. The team at Commencis is passionate about hel... read more about Commencis
50 - 249
$25 - $49/hr
>$100000
Türkiye
DDI Development is a renowned custom software development company that excels in turning innovative ideas into robust software solutions. With a strong emphasis on collaboration and client-centric development, DDI Development tailors its approach to meet the unique requirements of businesses across diverse sectors. Its team of seasoned professionals leverages a wealth of experience and cutting-edg... read more about DDI Development
50 - 249
$25 - $49/hr
$10000 - $25000
Poland
Kevuru Games stands as a distinguished game art and development studio renowned for its mastery in creating visually stunning and mechanically robust games. With a deep passion for gaming and a dedicated team of artists and developers, Kevuru Games excels in transforming creative visions into captivating gaming experiences. Specializing in both game art and development, the studio delivers a compr... read more about Kevuru Games
50 - 249
$25 - $49/hr
$25000 - $50000
Ukraine
Promwad stands at the forefront of technology innovation, specializing in hardware design and development, industrial design and manufacturing, embedded system software development, custom software development, and IoT development. It is a one-stop shop for companies looking to bring cutting-edge electronic products from concept to market. With a deep understanding of the complexities involved in ... read more about Promwad
50 - 249
$50 - $99/hr
NA
Lithuania
Roweb Development is a custom software development agency known for its ability to create innovative and efficient digital solutions tailored to the unique needs of businesses. With a passion for technology and a commitment to client success, Roweb Development offers a wide range of services, including web development, mobile app creation, e-commerce solutions, and enterprise software. Its team of... read more about Roweb Development
50 - 249
NA
NA
Romania
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