Best C# Development Companies & Expert C# Developers

Looking for the best C# development companies? You're in the right place! Selectefirms connects businesses with top C# developers and agencies. We understand your needs and have curated a list of experts specializing in C# functions, variables, and development solutions.
 
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4.9 out of 5, based on 801 real reviews.
Rankings updated: Apr 04, 2026

List of Top C# Development Companies | Best C# Developers & Service Providers

Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.

658 Companies

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% IT Services

  • 10% Blockchain Development

  • 10% Internet of Things

  • 10% AI Development

  • 10% Cloud Computing Services

  • 10% Business Services

We are changing the world with technologies

MedRec Technologies is a London-based software development company delivering advanced digital solutions to businesses worldwide. With a global team of 60+ software engineers, consultants, designers, and technology specialists across the UK, USA, Europe, the Middle East, and Asia, we provide scalable and high-performance software tailored to modern business needs. Our expertise includes AI and Machine Learning, Big Data Analytics, IoT, Cloud Computing, Blockchain, RPA, Cybersecurity, and SDN-NFV, enabling organizations to accelerate digital transformation. We serve diverse industries such as healthcare, fintech, retail, manufacturing, education, robotics, e-commerce, and transportation. Our core services include custom software development, mobile and web application development, enterprise solutions, automation systems, chatbot development, real-time applications, QA testing, and IT consulting. With a strong focus on innovation, quality, and collaboration, MedRec Technologies helps businesses build reliable, secure, and future-ready technology solutions.

View MedRec Technologies Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$10,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Udaipur, India

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Mobile App Development

  • 20% Internet of Things

  • 20% AI Development

  • 20% Web Design

  • 10% Web Development

Your Trusted Partner in Software Development

N7 Mobile – Innovative Mobile App Development & Custom Solutions At N7 Mobile, we transform your vision, ideas, and business goals into cutting-edge mobile applications with unique, engaging user interfaces. Our team of experienced developers and designers specializes in delivering reliable, high-performance apps for iOS, Android, and Windows platforms, helping businesses unlock their full potential. We leverage a highly customizable OpenGL graphics engine to create innovative UI designs that go beyond standard mobile OS limitations, allowing us to build truly original interfaces. Our expertise includes custom audio engines, video playback, and streaming solutions, fully integrated with diverse content providers. N7 Mobile also excels in social media integration, mobile payments, carrier billing, and digital media store development, enabling seamless user acquisition and monetization. Our location-based services utilize Bluetooth Low Energy (iBeacons) for precise indoor navigation, context-aware apps, and microlocation features. With experience in space-related software engineering, including projects like Solar Orbiter, Brite-PL, ESEO satellite, and CubeSat missions, we develop critical and high-reliability systems for complex applications. Partner with N7 Mobile to create innovative, scalable, and immersive mobile solutions that elevate user experiences and drive business growth.

View N7 Mobile Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$10,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Warsaw, Poland

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Mobile App Development

  • 20% Ecommerce Development

  • 20% Web Development

  • 10% Web Design

  • 10% Product Engineering services

  • 10% AI Development

Let's build awesome

SDI is a global software development company delivering innovative digital solutions to businesses for over 20 years. We specialize in custom software development, mobile app development, web design and development, and digital marketing services, helping organizations transform ideas into scalable digital products. Our team of 200+ certified professionals and 30+ UI/UX experts collaborates closely with clients to create tailored solutions that align with their business goals. With offices in California, Melbourne, and multiple locations in India, SDI has served 5,000+ clients worldwide and successfully delivered 2,000+ applications across industries including finance, education, healthcare, enterprise, social networking, and startups. Trusted by brands such as Pepsi, Stanford University, and Marvell, we focus on building high-performance applications, responsive websites, and growth-driven digital strategies that help businesses innovate, scale, and compete in today’s digital landscape.

View SDI - Software Developers Inc Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Saratoga, USA

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Web Development

  • 20% Web Design

  • 10% AI Development

  • 10% CMS

  • 10% Mobile App Development

Your website never sleeps. It sells, connects, and converts around the clock

Forrentech is a full-service web and mobile app development agency delivering end-to-end digital solutions for businesses across industries including eCommerce, PropTech, HealthTech, FinTech, and SaaS. As a trusted technology partner, we help organizations streamline operations and accelerate growth with scalable, high-performance applications. Our services include custom software development, MVP development, and workflow automation, tailored to meet unique business needs. We also specialize in no-code development using platforms like Bubble, enabling rapid product launches, reduced development costs, and faster time-to-market. With a strong focus on innovation, client satisfaction, and long-term partnerships, Forrentech builds future-ready solutions that support digital transformation. From startups to enterprises, we empower businesses to scale efficiently while we manage their technology with precision and expertise.

View Forrentech Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Birmingham, UK

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% Digital Transformation

  • 10% Cloud Computing Services

  • 10% Web Design

  • 10% CMS

Experts in digital transformation powered by AI

LogosCorp is a full-service digital and e-commerce agency committed to driving measurable growth and brand value through innovative web solutions. With over 25 years of industry experience, we provide tailored technology strategies that align with your business goals. Founded in 1997, our team of 35 skilled professionals operates from a nearshore production hub, delivering web development, app deployment, and digital commerce solutions for both fixed-quote projects and dedicated outsourced teams. We’ve successfully completed 400+ projects for 200+ clients across diverse industries, including HBO, Toyota, Pepsi, Unilever, and Johnson & Johnson. Our expertise spans B2C and B2B e-commerce, creating seamless online shopping experiences that boost conversions and customer loyalty. From platform selection to design, development, and optimization, we focus on solutions that leverage each ecosystem’s strengths while ensuring scalability, usability, and high performance. At LogosCorp, we thrive on challenging projects that require deep technical knowledge and creativity. Whether it’s a custom e-commerce store, web application, or full digital transformation, our mission is to help brands maximize revenue, enhance their online presence, and achieve lasting digital success.

View LogosCorp Profile
Inside Service Listing

$100-$149/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Weston, USA

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% Web Design

  • 10% Digital Marketing

  • 10% Digital Transformation

  • 10% IT Services

Your Partner in Digital Excellence

The C2 Group is a full-service web agency based in Grand Rapids, Michigan, dedicated to helping businesses thrive through digital innovation. With over 15 years of experience, we specialize in custom CMS and eCommerce solutions, delivering end-to-end services from strategy and UX design to development, adoption, and ongoing support. Our team of 35 experts creates browser-based business solutions for industries including manufacturing, consumer goods, higher education, and healthcare. We focus on seamless digital transformation, visual design, web and application development, cloud hosting, and continuous optimization. At C2 Group, we prioritize transparent, no-surprise project delivery and foster a collaborative, low-ego company culture recognized among the nation’s Best and Brightest Companies to Work For. Our mission is to empower clients, their teams, and customers with measurable, high-quality digital solutions.

View The C2 Group Profile
Inside Service Listing

$150-$199/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Grand Rapids, USA

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% Web Design

  • 10% IT Services

  • 10% AI Development

  • 10% Product Engineering services

  • 10% CMS

  • 10% Cloud Computing Services

Let's build something great together.

Plus8Soft is a global software development company helping startups and enterprises build, scale, and modernize digital products using cutting-edge technologies and flexible engagement models. Our distributed team of engineers, product experts, and project managers delivers high-quality, cost-effective solutions across industries. We go beyond coding—acting as a true technology partner by aligning with your goals, integrating with your workflows, and providing strategic insights that accelerate product success. From MVP development and team augmentation to legacy system modernization, we deliver scalable, future-ready solutions. With a strong focus on Agile development, transparency, and continuous improvement, Plus8Soft ensures predictable delivery and measurable outcomes—empowering businesses to innovate faster and grow with confidence.

View Plus8soft Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Palo Alto, USA

Location

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% Web Design

  • 10% AI Development

  • 10% CMS

  • 10% Cloud Computing Services

Powering Innovation Together

Enlighten Designs Ltd is an award-winning digital innovation agency specializing in website design, web application development, and AI-powered solutions. Based in New Zealand and serving clients globally, we deliver scalable, user-focused digital experiences that drive business transformation. Recognized as a Microsoft Country Partner of the Year, we leverage advanced technologies including Microsoft Azure, Power BI, Microsoft Fabric, and leading CMS platforms to build secure, high-performance solutions. Our team integrates cutting-edge AI from OpenAI, Google, and Anthropic, enabling businesses to stay competitive in evolving digital ecosystems. Our services include UX/UI design, custom web applications, digital strategy, and content management systems, with a strong focus on usability, performance, and conversion optimization. We are also experts in data visualization and storytelling, turning complex data into actionable insights. Through AI-assisted development and innovative methodologies, Enlighten Designs delivers efficient, future-ready solutions that empower organizations to innovate, grow, and succeed in a digital-first world.

View Enlighten Designs Profile
Inside Service Listing

N/A

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Hamilton, New Zealand

Location
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