Top C# Custom Software Development Companies

AgencyQ is an award-winning, full-service digital transformation company in Washington, D.C. Focusing on the intersection of technology, strategy, and design thinking, we deliver innovative digital solutions and tech applications that make a tangible impact.

alligatortek is recognized as a best-in-class partner, innovator and employer. We are a two-time winner of the Chicago Innovation Award and the 2015 Microsoft Partner of the Year. Our team is honored to be a four-time winner of the 101 Best and Brightest Companies to Work For in the country.

Analytix is a business solutions & IT services company with its HQ in USA and global delivery centers in India. Since our inception in 2006, we have been providing innovative business solutions comprising of product, services and IT Solutions to customers across the world. As your business grows, your need for technology enablement becomes very important. Analytix works with you to ensure your growth remains technologically sound. We have a process to understand your technology needs and then addresses them with solutions tailored specifically for you. Our technology specialization and agile driven processes in Web technologies and development, Product Development, Digital Analytics, Mobile, Cloud & UI/UX solutions, Dedicated Team Models have made us the partner of choice for our clients in USA, Europe and Asia.

Andersen is one of the top software development companies that provides a wide range of software outsourcing services to businesses of all sizes around the world, including web and mobile development, team extension, IT consulting.

Over 1800 experienced and qualified IT professionals are ready to start within 10 business days. You control the hiring process, reviewing CVs and trialing professionals, and there’s a 6-month warranty on all our code.

Since 2007, Andersen’s staff have delivered over 915 successful projects. Andersen’s Developers, Business Analysts, Designers, Project Managers, and other development professionals will deliver your project end-to-end, on time and in budget. Alternatively, we can step into key roles to augment your existing team. Along with high-quality software development, the company offers a wide range of testing services, including manual and automation testing for mobile, web, and desktop applications, QA audit and consultancy, Test Management, and Performance Testing. Andersen’s QA team consists of ISTQB-certified experts with extensive experience in software testing who can either participate in the development process of your software or provide QA as a separate service.

Qualitative software development

Our agency has also been featured in the press and in many mainstream media such as Yahoo Finance and Business Insider as a leading provider of online marketing, SEO, data analysis, web design and development, brand strategy, etc. Websites are often your customers' first impression of your business, so keep that in mind! We can help you create a stunning website that acts as a salesperson 24 hours a day, 7 days a week for your company. Our team is ready to provide any web solution you may need!

Born in 2015 with a team of more than 100+ tech-savvy professionals, Angry Nerds is a custom software solutions provider redefining what it means to bring your vision to life.

With our central office in Wroclaw, and a remote team working from multiple locations in Poland, we have delivered more than 545 successful projects globally. Our personal and personable approach, vast technological coverage, creative skills, and readiness to take on even the most challenging projects are what sets us apart.

Appinventiv is an award-winning organization providing impeccable technology solutions to startups and Fortune 500 companies. The company which started its journey back in 2015, today stands strong at 1000+ tech experts, engineers and professionals striving towards bridging the gaps between client ideas and reality. The sole aim is to facilitate rich customer experience and smarter, innovative solutions through on-time delivery and post-development support. They have so far delivered 1000+ projects successfully. The company has on-board disruptive technologies such as Blockchain, Artificial Intelligence, Machine Learning, Internet of Things, among others.

Appstudio is a full service software design and development firm located in the heart of Toronto. We are pioneers in disruptive technology, with a core focus on Mobile and Web Applications. With a young, creative, Canadian team, we strive to collaborate with our clients to create truly memorable digital experiences. Whether you are startup or Enterprise, we have the resources and price-point to service your mobile requirements.

We design custom software solutions, provide web, mobile, desktop and embedded development, test product ideas and business models, and build development teams

Archer Software is a trusted partner for dynamic and successful start-ups and companies in healthcare, automotive and fintech spaces all over the globe.

Why Archer Software?

• 18 years on the market
• ~ 300 served clients all over the world
• Stable and proven internal processes
• Microsoft Gold Certified Development Partner, ISO 9001:2015 certified
• Personalized care for customers
• Projects are run based on their complexity, size, technology, business goal
• Fast and easy team ramp-up
• Project manager and analyst available immediately
• Guaranteed on time due delivery
• Mature internal processes compliant to CMMI level 4

180+ people

200K+ hours in 2017

55 clients

Annual growth rate (2011-2017) 25%

Use Archer Software when you need to:

• Delegate project to reliable software development partner: cost performance index (CPI) on our projects during last five years > 99.5%
• Have End-to-end IT lifecycle management based on the best practices of RUP, XP and Agile
• Reply on project management expertise proven by comprehensive certification:2 certified PMPs, 4 Scrum Masters and 2 Product Owners
• Augment your IT team with additional multitechnology resources
• Leverage Archer ODC model and mitigate costs
• Meet schedule and quality requirements

Your goals fuel us. Creativity is our ally in creating digital products and solutions that get you where you want to go. Our human-centered approach leads us from idea to product every step of the way.

As a unified team of marketers, technologists, designers, writers, developers, architects, data scientists and data business strategists, we share a common passion for digital.

Arke is a full-service design and technology consulting company that provides connected, optimized digital solutions that drive conversion and exponential growth.

Simply being good isn't enough anymore. Customers and clients demand more. Better thinking, better experiences and better results. Arke boldly takes on this challenge. Raising the bar. And providing connected, conversion-oriented digital solutions that lead to exponential growth.

We specialize in software development projects of high complexity, high risk and high transparency, which are too important to send to an offshore company. When failure is impossible, our clients turn to us to achieve their strategic goals.Why does our process work? Because it's based on more than 35 years of heavy software development experience. We've cracked the code on how to design and build bulletproof applications in a reliable and predictable way. We're so confident in our abilities that we guarantee results.

Bamboo Agile is a software development boutique with an office in Tallinn (Estonia). For almost two decades, we’ve been delivering solutions for telecommunications, education, healthcare, marketing, e-commerce, and other industries, with our global reach stretching from the US to the UAE. We are a trusted partner of numerous renowned brands, such as A1 Telekom Austria Group, Orange, or MobileTelesystems. Our Services include but not limited to the following: • Custom Software Development Services • Backend Development and Custom Integrations • Web Solutions Development • Mobile Applications Development • Performance Analysis • Shopify Solutions Development and Customization • Application Modernization Developing software, we go full cycle. We’ll take you from a concept to a smoothly running service, suite, or site—every step of the way including software requirements, prototype design, architecture design, front-end and back-end development, quality assurance, deployment, and maintenance.

Bamboo Agile is a software development boutique with an office in Tallinn (Estonia). For almost two decades, we’ve been delivering solutions for telecommunications, education, healthcare, marketing, e-commerce, and other industries, with our global reach stretching from the US to the UAE.

We are a trusted partner of numerous renowned brands, such as A1 Telekom Austria Group, Orange, or MobileTelesystems. Our Services include but not limited to the following: • Custom Software Development Services • Backend Development and Custom Integrations • Web Solutions Development • Mobile Applications Development • Performance Analysis • Shopify Solutions Development and Customization • Application Modernization Developing software, we go full cycle. We’ll take you from a concept to a smoothly running service, suite, or site—every step of the way including software requirements, prototype design, architecture design, front-end and back-end development, quality assurance, deployment, and maintenance.

BEEU Tech is among the fastest-growing IT Services & Custom Software Development firms based out of Kolkata, India with offices in the US. Our core capabilities lie in Artificial Intelligence & Digital Transformation, and our main goal is to enable organizations to hire better and perform better. We enable organizations across the world to find and hire the right developers for them with the help of an efficient team of solution specialists with unmatched creativity eyeing seamless experiences for customers. 

Big Fish is a team of US-based technical experts who design and build custom mobile apps. Our mission is to make it easy to buy custom software.

BigScal Technologies is a leading software development company that specializes in providing customized software solutions to businesses of all sizes. Our team of experts leverages the latest technologies and industry best practices to deliver high-quality, scalable, and cost-effective software solutions that meet the unique needs of each client.

Automation-led Digital Transformation & Custom Software Development Company. Binmile is committed to offering a plethora of services in digital product engineering, software product engineering, test automation, cloud & DevOps, Mobility, ServiceNow, and Microsoft dynamic 365 services. From software development to platform modernization and product engineering to R&D, we offer a full suite of services for companies across different industries.

At BIT Studios, we offer the most effective software development outsourcing services. We use our three main models that suit your project's exact needs.

Our simple reason to exist is to help you become Successful. It’s as simple as that. So when we Develop Website and Mobile applications for you, we do it with keeping that objective in mind - and we do it darn well. Our secret sauce for success is – we take pains in understanding what your Customers need from you and exceed their expectations. We are sure that would certainly delight you!

Black Bear Design is an Atlanta-based design firm offering all kinds of online marketing and graphic design services such as website design, search engine optimization and pay-per-click marketing.

Black Bear Design is the fully integrated digital marketing agency you've been looking for. From the moment we opened in 2004 until today, we've been at the forefront of marketing innovation.Whether you're looking for a modern, elegant website, a full-scale paid media campaign, top-notch graphic design, or expert SEO across all channels, Black Bear Design can handle it all.

Bonsai may be based in Seattle. But we use the best talent from all over the world. That allows us to move fast. Stay ahead of the curve. And work with great people. So, while one team completes the job, another team enters the system. The sun never sets over the Bonsai Empire.

Bonsai Media Group is a digital advertising agency headquartered in Seattle. But our reach is worldwide.We develop intuitive websites and apps for the world's largest and smallest companies. And digital marketing is done the same way. Smart design and data-driven solutions are repeated over and over until every valuable penny is given away.We do it the way you would if you had about a thousand more hours in a day.

Brain Bytes Creative is many things. A cutting-edge web development company. Intelligent digital marketing agency. Developer of custom apps for smartphones, tablets and the web.

Superior customer service, creativity, craftsmanship and technical capabilities are the cornerstones of what makes our company the best in the business. Tell us your business marketing needs and we can make them happen!

We provide Microsoft-based business intelligence and enterprise data management, infrastructure optimization, portals and collaboration, business process automation and improvement, custom application development and systems integration.BrainSmiths offers a full range of software development services.

BrainSmiths is an Indian technology solutions and systems integration company. BrainSmiths helps enterprises design, develop and test deploy innovative technologies.We are a team of experts from Microsoft Technologies, specializing only in Microsoft technology-based business intelligence and enterprise data management, infrastructure optimization, portals and collaboration platforms, business process automation and improvement, custom application development and systems integration.

IT/Programmer Outsourcing Services, Web Application Development Services, Mobile Application Development Services, UI/UX Outsourcing Services,QA Outsourcing Services, Managed Services, Cloud Platform (AWS,GCP,Azure,Huawei) Integration Services, Data Warehousing and Business Intelegence, Custom Middleware specialist

A well-known Canadian software development company, Career IT and Business Solutions Inc., offers top-notch, cutting-edge solutions for companies of various sizes. Career IT and Business Solutions Inc. has constantly offered clients in Canada the best software development services because of a team of skilled developers and a dedication to innovation. Other notable services its qualified resources provide include digital marketing, web design and development, e-commerce development, ERP, and mobile app development. Career IT and Business Solutions Inc. have the expertise and knowledge necessary to support your success.

For more than 10 years, we have delighted our customers with the right balance of entrepreneurial spirit and pragmatism

We are an award-winning Colombian nearshore software development consultancy operating in the US, UK and Colombia. We focus on digital transformation projects that include mobile, web and cloud initiatives as well as application migration.We are a digital product development company that turns our customers ideas into reality. From product design to delivery, we help our customers succeed.

CGColors is a leading creative web design shopify agency and provides shopify store setup and marketing at best price.

CGColors is a reputed web design agency, provide magento solutions, shopify custom design and integration, wordpress development, bigcommerce, zencart, opencart, volusion eCommerce design at affordable price. We have dedicated team for all platform.

CitrusBits is a top-ranked mobile app development agency on Clutch, with +15 years of experience in designing & developing impactful mobile apps & responsive mobile content for businesses.
Our app development strategies have produced over 300 apps for clients like LoveSac, Alaska Commercial, RadiusXR, ERUPT, IrisVision, and Sotheby’s, as well as award-winning mobile experiences for Fortune 500 companies.

At Citrusbug Technolabs, we build lasting relationships with businesses by providing them top-notch custom software solutions. From a humble beginning in 2013, we have grown into a premium digital partner for SMB’s and startup businesses by helping them build enterprise software solutions for their everyday needs. We enable digital transformation for businesses through our talented pool of creative developers, designers, solution consultants, and marketing professionals.

CloudFountain Inc. focuses on providing architecture design solutions and top notch application development services. We have expertise in Insuretech, Fintech, Financial services and health care industry. We have proven expertise in Artificial Intelligence, Machine Learning, Big data, Enterprise application integration, CRM and cloud computing. We have great client references to show for solutions in big data, high transaction processing applications and platform development.

Code Brew Labs is a mobile app development company in the USA with an obsession to lay the roadmap to success for your business. With the experience that we have gathered as a leading On-Demand Mobile App Development Agency from working on different projects, we understand that every app is different and deserves special and distinct attention.

Build your tailor-made Upwork and Fiverr Like freelance marketplace with the team of skilled professionals at Code brew labs and transform your dreams into reality. Launch Your Customized Marketplace Like Fiverr or Upwork today.

We are the top-notch iOS and Android App Development Company based in Dubai and USA. Our team has worked with startups and enterprises to give shape to their ideas and provide in-depth market analysis to help them move forward, and it is now time for our team of app experts to come to your aid.

We are the top custom web and mobile app development company In India, the USA, UAE, Canada and Australia

The magic of Codelab is just beginning. We've shipped a variety of work, but because we're ninjas too, we sometimes do markdowns and undercover work. We're happy to show something with the NDA, who we conveniently connected with in context, and have included a snapshot of some of the work that brought us together in the first place.

Codelab303 is a digital technology team of experienced designers, engineers and producers who help our partners create engaging, efficient and effective creative technologies for all needs and scales.Our battle-hardened team of creative technology production specialists is obsessed with making sure we create the right things and build them right, on time and on budget. To do this, we realized that we needed to develop a way of working that was a little different than what you might expect from a typical digital agency.

CodeSparrk is the leading app mobile app development company in USA, India and UK. Our business provides the most cutting-edge mobile app services. CodeSparrk offers professional and affordable mobile app development services for iOS, Android, Web, AR/VR, game development, and more.

We recognise the value of Clients Business and prioritise the software and apps our clients demand. We recognise the importance of your business and, as a result, we create a detailed step-by-step plan. Our talented software engineers create one-of-a-kind, faultless, and adaptable software for you. We at CodeSparrk having a talent team of professionals in Mobile, Web and Custom Software Development who can create your ideas into reality with best applications for your business need.

Ever since our beginning, we have worked on the concept of making Technology accessible, comprehensible and approachable for enterprise all over the global landscape.

Codevil Studios is a Certified Web and Mobile App Development Company. Since our inception, we have helped the enterprise grow out of their modern business challenges, incurred due to lack of technical knowledge and resources.

We have an expansive global network of developers, UI/UX designers, strategists, and digital marketing experts who support our clients in solving the most complex enterprise management and operational challenges. From strategy to development to execution; Codiant is your end-to-end technology partner with all-inclusive experience in Enterprise Digital Transformation and Modernization, Cloud and IT Infrastructure, and all other trending technologies.

Codiant- A Yash Technologies Company, is a leading technology service provider that specializes in the field of Enterprise Mobility, Web Application Development, UI/UX Development, and Application Maintenance and support Services across various platforms. We’ve continually disrupted industries like Healthcare, fitness and wellness, E-commerce, Logistic & Transport, On-demand mobility, Real estate, Travel & Hospitality and BFSI by fusing a continuous symphony of technologies, strategies, digital transformations, and high-end designs. Our customer-focused solutions and products help enterprises overcome technical hurdles and business challenges, through our digital service excellence and software development capabilities in Enterprise Mobile and Web Applications, Customer Experience Development, SaaS Products, Analytics, and IoT Solutions.

Our Blockchain solutions enable businesses to operate more efficiently and effectively. As the future unfolds, we are be able to provide our clients with a formidable position. With four years of experience in blockchain-based software development, we are a 100% bootstrapped company.

We use a flexible methodology and apply its principles to all areas of our company, from finance and sales to operations and production. This helps us stay aligned as partners and work together more effectively. Our team is experienced, resourceful and focused on the business challenges that drive our clients to change industries.

We are an enterprise technology company specializing in creating innovative technical solutions for real-world business problems.Headquartered in downtown Orlando, our services cover a wide range of corporate needs, including software and mobile application development, business analytics, data analytics and IT staff expansion. Concepta's focused approach puts business needs first.We serve an international portfolio of Fortune 100, 500 and Franchise 500 companies and have created some of the best apps for iTunes and Google Play.

My name is Conor Leary, I'm a Full Stack web and mobile developer from Boston, Massachusetts. Prior to freelancing, I worked as a full-time developer for several years. Most notable was my work at DraftKings designing and developing REST microservices to handle real-time traffic for millions of concurrent users.