Top C# Development Companies

Building dynamic, high-performance applications requires the expertise of skilled C# developers who understand both the intricacies of the language and the needs of your business. Whether you're developing desktop applications, enterprise software, or web services, leading C# development companies provide tailored solutions designed for scalability, reliability, and security. Trusted C# experts bring deep technical knowledge to every project, ensuring optimized code and smooth integration. A reliable C# Service Providers or custom software development partner can help turn your unique ideas into robust, efficient applications. Explore our curated list to find the right C# development team for your next software project.
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Last Updated: September 09, 2025

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5142 Companies

List of Top C# Service Providers | Best C# Developers

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Azilen Technologies

Product Engineering Company

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Azilen Technologies is a global product engineering company that excels in custom software development, cloud solutions, AI, IoT, and blockchain. Offering end-to-end services from design deployment, Azilen helps businesses innovate and scale across industries like fintech, healthcare, and retail. They deliver tailored solutions that drive operational efficiency and long-term growth. read more about Azilen Technologies

Employees

250 - 999
Hourly Rate

$25 - $49/hr

Project Cost

NA
Location

United States

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TekRevol

Creative Web | App | Software Development Company

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TekRevol stands out as a comprehensive software development company that caters to both startups and established organizations seeking innovative digital transformation solutions. Founded with a vision to revolutionize technology and make a significant impact in various sectors, TekRevol offers a wide array of services, including mobile app development for iOS and Android, game development, web de... read more about TekRevol

Employees

250 - 999
Hourly Rate

$25 - $49/hr

Project Cost

$25000 - $50000
Location

United States

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Rootstrap

Outcome-driven development. At any scale.

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Rootstrap is a digital products agency that excels in scaling people, processes, and products through outcome-driven development. Founded in 2011 by Anthony Figueroa, Ben Lee, and Fernando Colman, the company operates from multiple locations, including Los Angeles, San Francisco, New York, and Montevideo. Rootstrap has successfully launched over 750 digital products, garnering more than 100 millio... read more about Rootstrap

Employees

250 - 999
Hourly Rate

$50 - $99/hr

Project Cost

>$100000
Location

United States

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Zealous System

#1 Web, Mobile App, & Software Development Company

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Zealous System is a technology consulting firm and web development company offering a broad spectrum of custom web and mobile application services. Its expertise spans IT strategy and architecture, application development and maintenance, mobile application development, business intelligence, data warehousing, business process management, cloud computing, and quality assurance services. With a glo... read more about Zealous System

Employees

50 - 249
Hourly Rate

<$25/hr

Project Cost

$5000 - $10000
Location

India

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Hexacta

Custom Software Development Solutions

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Hexacta is a distinguished player in the field of software development, known for its innovative approach to solving complex business challenges through tailor-made technology solutions. With a deep commitment to quality and a keen eye for detail, Hexacta specializes in offering a wide range of services, including custom software development, IT consulting, and UX/UI design, to businesses across v... read more about Hexacta

Employees

250 - 999
Hourly Rate

$25 - $49/hr

Project Cost

$5000 - $10000
Location

Argentina

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EffectiveSoft

You have challenges. We have solutions.

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EffectiveSoft sets itself apart in the custom software development arena by offering innovative solutions tailored to the unique demands of businesses worldwide. With an impressive portfolio that spans various industries, from finance to healthcare, EffectiveSoft leverages its deep technological expertise to engineer software that precisely aligns with its clients' strategic objectives. The compan... read more about EffectiveSoft

Employees

250 - 999
Hourly Rate

$50 - $99/hr

Project Cost

$25000 - $50000
Location

United States

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Abto Software

Where science and technology work for you

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Abto Software stands out as a full-cycle custom software engineering company dedicated to transforming the way businesses operate through state-of-the-art digital solutions. With a keen focus on innovation and quality, Abto has mastered the art of taking projects from initial concept through to final deployment, offering services that encompass everything from software development and UI/UX design... read more about Abto Software

Employees

250 - 999
Hourly Rate

$25 - $49/hr

Project Cost

NA
Location

Ukraine

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Quytech

Mobile Apps, AI, Games, AR/VR, Blockchain Company

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Quytech is a premier software development company known for its expertise in crafting cutting-edge mobile apps and enterprise mobility solutions. With a strong focus on innovation, Quytech delivers high-quality, custom software development services, including AR/VR development, AI/ML solutions, Blockchain technology, and mobile app development across various platforms like iOS and Android. Caterin... read more about Quytech

Employees

250 - 999
Hourly Rate

<$25/hr

Project Cost

$10000 - $25000
Location

India

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One Beyond

Award Winning Bespoke Software Development

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One Beyond is a dynamic bespoke software development company that excels in creating tailor-made digital solutions for businesses of all sizes. It has a team of skilled developers and creative thinkers specialize in understanding unique business challenges and translating them into efficient, innovative software applications. Whether it's streamlining operations, enhancing customer engagement, or ... read more about One Beyond

Employees

250 - 999
Hourly Rate

$50 - $99/hr

Project Cost

>$100000
Location

Spain

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Redwerk

Software Development Agency

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Redwerk is a renowned software development company established in 2005, dedicated to providing custom software development services to a diverse clientele, including startups, midsize businesses, and large enterprises worldwide. The company excels in transforming initial concepts into live solutions, covering a wide range of services from product development and UI/UX design to quality assurance a... read more about Redwerk

Employees

50 - 249
Hourly Rate

$50 - $99/hr

Project Cost

$10000 - $25000
Location

Ukraine

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Digital Silk

Custom Web Designs to Drive Conversions

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Digital Silk is a full-service web designing agency focused on creating superior digital experiences. With a global footprint, it specializes in designing and developing custom websites, apps, and software solutions tailored to meet diverse business needs. With a keen eye on elevating brand presence, Digital Silk also offers comprehensive digital marketing services, including SEO, PPC, social medi... read more about Digital Silk

Employees

50 - 249
Hourly Rate

$100 - $149/hr

Project Cost

$10000 - $25000
Location

United States

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Evon Technologies

Spearheading Innovation

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Evon Technologies, situated in India, is a dedicated IT service provider that delivers innovative and customized technology solutions that cater to the diverse needs of its global clientele. With a strong team of more than 425 experts, Evon Technologies has successfully executed over 650 projects, showcasing its vast experience and technical prowess. The company's core services encompass software ... read more about Evon Technologies

Employees

50 - 249
Hourly Rate

<$25/hr

Project Cost

< $5000
Location

India

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AgileEngine

High performing remote dedicated teams

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AgileEngine has evolved significantly since its inception, growing into a global powerhouse with over 1000 experts dedicated to building impactful software for Fortune 500 companies and top-funded startups alike. Its reach spans leading talent hubs in the Americas, Europe, and Asia, experiencing a growth rate of up to 70% per year. The company started offering software development services in 2013... read more about AgileEngine

Employees

1,000 - 9,999
Hourly Rate

NA

Project Cost

>$100000
Location

United States

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Siili Solutions

YOUR TRUSTED PARTNER IN DIGITALIZATION

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Siili Solutions is a digital innovation partner that empowers businesses to grow their business and enhance their efficiency through design, data, and AI-assisted development. It specializes in creating tailored solutions that elevate digital businesses by harnessing top talent across key service areas such as data and AI, eCommerce and portals, design services, cloud solutions, and custom develop... read more about Siili Solutions

Employees

250 - 999
Hourly Rate

$100 - $149/hr

Project Cost

$10000 - $25000
Location

Finland

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REEA

IT agency That joins you from concept to launch

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REEA is a versatile digital agency that excels in blending creativity with technology to offer comprehensive solutions across a wide spectrum of digital services. From strategy and branding to user interface (UI) and user experience (UX) design, REEA crafts engaging and intuitive digital experiences. Its expertise extends to web development, video and animation, and mobile app creation, ensuring d... read more about REEA

Employees

50 - 249
Hourly Rate

$25 - $49/hr

Project Cost

< $5000
Location

Romania

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Andersen Inc.

Software Solutions to Transform your Business

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Andersen Inc. is a global player in the custom software development industry renowned for its expertise in crafting tailored IT solutions, web, and mobile applications. Andersen has significantly expanded its footprint by establishing over 16 development centers and sales offices worldwide. The company boasts a robust team of more than 3,500 highly skilled professionals dedicated to the developmen... read more about Andersen Inc.

Employees

10 - 49
Hourly Rate

$50 - $99/hr

Project Cost

>$100000
Location

Poland

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Clavax

Software Development Company

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Clavax, established in 2011 and headquartered in San Jose, California, is renowned for its innovative approach to delivering enterprise solutions that significantly enhance client business operations and impact lives positively. The company prides itself on a team imbued with imagination, knowledge, and extensive experience across various technologies, ensuring each project undertaken is handled w... read more about Clavax

Employees

50 - 249
Hourly Rate

$25 - $49/hr

Project Cost

$5000 - $10000
Location

India

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Gamechuck

Let’s craft worlds and stories together

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Gamechuck is a vibrant and innovative game development studio that has quickly made a name for itself in the gaming industry for its unique blend of creativity and technical prowess. Renowned for developing engaging, story-driven games, Gamechuck takes players on unforgettable journeys through meticulously crafted worlds. Its portfolio showcases a diverse range of genres, from fast-paced action ga... read more about Gamechuck

Employees

10 - 49
Hourly Rate

$50 - $99/hr

Project Cost

$10000 - $25000
Location

Croatia

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Optimind Technology Solutions

Philippine Digital Agency

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Optimind Technology Solutions is a full-service digital agency that offers a comprehensive suite of services designed to help businesses thrive online. Specializing in SEO, web design and development, mobile app development, social media marketing, and Google Ads management, Optimind combines strategic insight with technical expertise to boost online visibility and engagement. Its approach is cent... read more about Optimind Technology Solutions

Employees

10 - 49
Hourly Rate

$50 - $99/hr

Project Cost

$5000 - $10000
Location

Philippines

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Qulix

Software Development and IT Consulting Services

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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

Employees

250 - 999
Hourly Rate

$50 - $99/hr

Project Cost

$25000 - $50000
Location

Poland

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SimbirSoft

We create world class software products & services

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SimbirSoft is a prominent software development company founded in 2001, known for delivering innovative IT solutions to businesses worldwide. Headquartered in Ulyanovsk, Russia, with additional offices in multiple countries, SimbirSoft specializes in custom software development, quality assurance, and IT consulting. The company excels in various industries, including finance, healthcare, retail, a... read more about SimbirSoft

Employees

1,000 - 9,999
Hourly Rate

$50 - $99/hr

Project Cost

NA
Location

Russia

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CDN Solutions Group

Custom software and Mobile App Development Company

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CDN Solutions Group is a leading custom software and mobile app development company with a proven track record of delivering innovative IT solutions. With expertise in creating tailored software solutions, our team excels in developing high-quality mobile apps, enterprise software, and web applications. We are dedicated to transforming your business ideas into reality through cutting-edge technolo... read more about CDN Solutions Group

Employees

250 - 999
Hourly Rate

$25 - $49/hr

Project Cost

$25000 - $50000
Location

India

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Relevant Software

We provide companies with senior tech talent and product development expertise to build world-class software.

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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

Employees

50 - 249
Hourly Rate

$50 - $99/hr

Project Cost

NA
Location

Ukraine

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ISBX

Interactive. Strategy. Branding. Execution

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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

Employees

50 - 249
Hourly Rate

$100 - $149/hr

Project Cost

$25000 - $50000
Location

United States

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Softermii

We deliver your Product on-time and budget

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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

Employees

50 - 249
Hourly Rate

$25 - $49/hr

Project Cost

$25000 - $50000
Location

Ukraine

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