All C# (C-Sharp) Development Companies in Ontario
Quantum IT Innovation
5(149 reviews)Top Mobile & Web Development | AI Solutions | Digital Marketing Services
Highly recommendedQuantum IT Innovation is a world-class IT firm specializing in Business optimization solutions, Web Development, App Development, AI, & Digital Marketing for B2B and B2C agencies and companies in the USA, UK, Canada, Ireland, UAE, Australia, the Middle East, India, & across the globe. Our expertise extends to working with startups and global enterprises, crafting innovative products that drive growth and success. With a dynamic team of over 200 talented professionals, we offer end-to-end digital engineering solutions that align with your strategic goals. Why Partner with Us? With nearly a decade of industry experience and a portfolio of prestigious clients, Quantum IT Innovation stands at the forefront of digital innovation. Our commitment to excellence is reflected in: 1,000+ clients served globally 2,000+ software solutions delivered $800 million+ raised in investments for startups 5+ innovation hubs driving cutting-edge research and development At Quantum IT Innovation, we are dedicated to building transformative digital products that elevate user experiences and propel businesses forward. Join us in shaping the future of technology. Our Services - Mobile app development - Web app development - Artificial intelligence consultancy - Android App Development - Professional SEO Services - Digital Marketing - Custom app development - iOS App Development Company - Robotic Process Automation (RPA) - Social Media Marketing ServicesLooking for work in C# (C-Sharp) DevelopmentLocated in Cambridge, Canada (+5)From €1,000 for C# (C-Sharp) DevelopmentWorked in Education (+23)Speaks English, Hindi201-500 membersMMC Global
4.9(10 reviews)Best Software Development Company
RecommendedMMC Global is an award-winning business solutions provider that serves organizations across different industry verticals around the globe. We helps organizations streamline business operations and compete in the global marketplace by focusing on a range of cutting-edge technologies: Artificial Intelligence Solutions Chatbot Development Product Strategy Design UX/UI Mobile application development Web application and website Development Security Consultant, DevOps Data Science Digital Marketing We believe that technical execution should not be a barrier to developing new projects, which is why we work closely with our customers to understand their vision, help them define their product, then design, build and launch it in the most efficient way possible. We have already developed application, mobile application and different solutions for Startups, Small Medium Enterprise (SME) and enterprises, streaming web applications, erp applications, MVPs, business process automation systems, e-commerce sites and many others. For a transformative digital journey, reach out to us at info@mmcgbl.com to discuss your project!Looking for work in C# (C-Sharp) DevelopmentLocated in Mississauga, Canada (+2)From €1,000 for C# (C-Sharp) DevelopmentWorked in Non-profit (+4)Speaks English, Arabic(+1)501-1000 membersW AXIS INC.
(0 review)Enterprise AI: control plane, workflow automation, agents, knowledge & analytics.
W AXIS INC. (Waxis) is a Toronto-based B2B AI platform company with University of Toronto roots. We turn business workflows into production AI systems: enterprise AI control planes with governed model routing, access, policy audit and cost control; workflow automation across CRM, ERP, warehouse and support stacks; business AI agents; enterprise knowledge bases with RAG and citation tracing; domain model adaptation; and AI-ready data and analytics with natural-language querying and anomaly alerts. Our focus is deployable, auditable, and maintainable AI software for real operations, not demos.Looking for work in C# (C-Sharp) DevelopmentLocated in Toronto, CanadaFrom €1,000 for C# (C-Sharp) DevelopmentWorked in Clothing & Accessories (+2)Speaks English, Chinese1-10 membersDiscretelogix
(0 review)strategy | innovation | growth
Discretelogix is a global technology partner helping businesses turn ideas into scalable digital products. Since 2006, we’ve been delivering custom software, web and mobile applications, SaaS platforms, and AI-driven solutions for startups, SMBs, and enterprises worldwide. At Discretelogix, we don’t just build projects, we execute missions. Our team combines strategy, innovation, and engineering excellence to solve complex business challenges and create high-performance systems that drive real growth. From modernizing legacy platforms to building next-generation digital products, we focus on delivering solutions that are reliable, scalable, and future-ready. With a strong global presence across the United States, Canada, and Europe, we provide dedicated development teams and flexible engagement models tailored to each client’s needs. Our collaborative approach, transparent processes, and commitment to quality make us a trusted partner for businesses looking to innovate, scale, and succeed in a competitive digital landscape.Looking for work in C# (C-Sharp) DevelopmentLocated in Toronto, Canada (+2)From €1,000 for C# (C-Sharp) DevelopmentWorked in Transportation (+26)Speaks English51-200 membersUniRidge
(0 review)Stalwart solutions for peak results
UniRidge is a software development partner that helps businesses modernize legacy systems, build custom applications, and accelerate digital transformation. Founded in 2016 and operating globally, our experienced team of developers, solution architects, and QA engineers delivers high-quality, scalable solutions tailored to each client’s goals. We specialize in custom software development, C# and .NET solutions, legacy code refactoring, cloud consulting, and data migration. With a strong focus on reliability, adaptability, and business impact, we support companies across fintech, PropTech, enterprise services, and more. Whether you need to build a product from scratch or revamp outdated infrastructure, UniRidge brings the technical expertise and collaborative approach to make it happen — on time and with measurable results.Looking for work in C# (C-Sharp) DevelopmentLocated in Ottawa, CanadaFrom €5,000 for C# (C-Sharp) DevelopmentWorked in Telecommunications (+3)Speaks English11-50 membersUSOC Inc
(0 review)Building & Securing Your Digital Future
We offer a range of cyber security and web application development services designed to improve and protect your business from evolving cyber landscape. Our solutions include building your security infrastructure, secure application development, vulnerability assessments, threat detection, incident response, and 24/7 monitoring, ensuring your data remains secure and your operations remain uninterrupted.Looking for work in C# (C-Sharp) DevelopmentLocated in Kitchener, CanadaFrom €100 for C# (C-Sharp) DevelopmentWorked in EducationSpeaks English11-50 membersSidekick Interactive
4.8(4 reviews)The Leading App Development Agency in Canada
RecommendedTop awardedWe build custom, high-performance mobile applications. US and Canadian enterprises trust Sidekick Interactive. 14+ years building apps for enterprise, healthcare, and connected devices (IoT). Montréal-based and led team: Over 75% of our team are senior-level developers — far above industry norms. High-fidelity UX/UI before development begins. Agile project management: on time, on budget. Secure, scalable, and maintainable code. Rigorous QA by our testers for flawless launches. Transparent, pay-for-what-you-need billing. Experts in mobile apps (Swift, Kotlin) as well as Hybrid apps (ReactNative, flutter) Our specialized services: Sidekick Maintenance – Proactive app maintenance, updates, and support to keep your product secure and running smoothly. Talent Sidekick – We connect you with vetted iOS, Android, React Native, and Flutter experts tailored to your project and team. 3D-Sidekick – Our proprietary 3D scan app that turns mobile devices into powerful scanning tools for O&P professionals.Looking for work in C# (C-Sharp) DevelopmentLocated in Montreal, CanadaFrom €1,000 for C# (C-Sharp) DevelopmentWorked in Energy & Oil (+8)Speaks English, French11-50 membersBrandZero™ | ElitePXL Media™
(0 review)Build. Innovate. Accelerate.
At BrandZero™ , we’re more than just a marketing agency —we’re your global brand transformation partner. What sets us apart is our all-in-one approach: we combine strategic branding, AI-powered CRM automation, immersive digital experiences, and international business setup services—all under one roof. With offices in Dubai, Toronto, and Hyderabad , we specialize in helping entrepreneurs and enterprises launch, scale, and thrive across borders. From crafting high-converting websites and driving measurable growth through SEO and paid ads, to securing global company formation and legal support—we deliver results, not just promises. We leverage the latest in AI, automation, and data-driven strategy to make your business smarter, faster, and future-ready. Innovation. Integration. Impact. That’s the BrandZero™ difference. BrandZero™ was born out of a shared frustration: traditional agencies using outdated, one-size-fits-all strategies that stifled creativity and scalability. What began as ElitePXL Media LLP in Hyderabad, India, quickly evolved into a multi-national creative and consulting powerhouse with a presence in Dubai (UAE) and Toronto (Canada). Founded by a group of passionate brand-builders, marketing strategists, and tech consultants, we started with one mission: to help visionary entrepreneurs grow beyond borders using a modern blend of AI-powered automation, smart digital marketing, and global business setup services. Over the years, we’ve empowered 100+ startups, SMEs, and scale-ups across Canada, the USA, the UK, UAE, Saudi Arabia, and India, transforming ideas into revenue-generating realities. In 2025, ElitePXL Media officially rebranded to BrandZero™ to better reflect our bold, borderless, and tech-forward vision of brand transformation and business growth for the next generation.Looking for work in C# (C-Sharp) DevelopmentLocated in Mississauga, Canada (+1)From €1,000 for C# (C-Sharp) DevelopmentWorks in multiple industriesSpeaks English, Hindi(+1)11-50 membersStartbit IT Solutions Pvt. Ltd.
5(32 reviews)Designing The Future
Top awardedStartbit IT Solutions Pvt. Ltd. an ISO 9001 and 27001 certified company, is a Global IT Services provider company with expertise in outsourced product development and custom software development focusing on web app development, mobile app development, and tailor-made solutions, etc. We consistently deliver offshore outsourcing solutions, quality software products, and solutions to start-ups, and mid-size and large enterprises worldwide. We have 2200+ satisfied clients worldwide. We develop web, windows, and mobile applications using all the latest technologies i.e. SalesForce, SAP, Microsoft Technologies (ASP.Net, C#, VB.Net, Azure, Entity/MVC framework, SSRS, Crystal Reports, etc.), MEAN Stack, Front-end, PHP, Laravel, React, MERN, WordPress, CodeIgniter, Shopify, Ruby on Rails, Android Development, iPhone development, Hybrid mobile app, etc. WHAT WE DO? Customized Software Development: We develop custom web and mobile app solutions from conceptualization to market launch covering your business needs. eCommerce Solutions: We have end-to-end e-commerce solutions with any kind of customization and store management consultancy. Staffing Solutions: We deploy our team on client’s projects in an offshore model to work with their local team/clients following all the legal compliance. Process Automation: We help our clients to automate their current manual processes with our industry-proven solutions to increase their overall productivity. Quality And Reliability: Team Startbit is focused and committed to quality output, we follow all the best practices to deliver it. We follow ISO and SOC compliance. Our clients rely on us in terms of data, processes, technologies, and deliverables, therefore we have been their back-end partners for many years and add value to it every year passing by. Startbit has a team of 85+ full-time resources and more than 50% of them are certified in various areas – Scrum Master, Azure, AWS, Shopify, etc. Our team members are available during USA, UK, and India business hours . Team Startbit has expertise in web application development, framework knowledge, project management tools, and all required documentation. We are a young, agile team with a passion for delivering superior software solutions, products, and customer services. Our team is well qualified and dedicated to work; most are certified by Microsoft and Sun Microsystems. Being a customer-driven company, Team Startbit constantly strives to provide the highest quality services to its customers.3 works in C# (C-Sharp) DevelopmentLocated in Jaipur, IndiaFrom €500 for C# (C-Sharp) DevelopmentWorked in Hospitals & Healthcare (+10)Speaks English, Hindi51-200 members