Best C# Development Companies

12 Companies - Rankings updated: September 03, 2026

We evaluate every agency on DesignRush for technical expertise, delivery quality, and verified feedback to help businesses find reliable software development services. Some listings may be paid.

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  • BairesDev

    Software Outsourcing & Development | 500+ Active Clients

    Founded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed

    BairesDev Services

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Web Design
    • Staff Augmentation
    • Product Design
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Google
    • Salesforce
    • IBM
    • Autodesk
    • Rolls-Royce
    • SiriuXM
    • Motorola
    • Burger King
    • Chime
    Data sourced from the agency's DesignRush profile

    BairesDev Reviews & Testimonials

    • Undisclosed
      Undisclosed Director of e-commerce solutions at URBN
      5.0 ★

      Web Development Review from Undisclosed

      We were truly impressed by the BairesDev team's expertise, work ethic, and eagerness to learn. The agency quickly adapted to our corporate culture and integrated seamlessly. When tasked to work on a new platform, it provided solutions within a week. It's like the software version of a versatile and powerful utility infielder.

    • Undisclosed
      Undisclosed Engineering Manager at Pinterest
      5.0 ★

      Staff Augmentation Review from Undisclosed

      BairesDev engineers are the soul of the team. They’re able to identify dependencies and figure out solutions quickly. They strongly exceeded my expectations.

    • Undisclosed
      Undisclosed Team Leader at Avigilon
      5.0 ★

      Web Development Review from Undisclosed

      Following consultations with the BairesDev team, we recognized that the primary objective was to localize the system and concentrate on enhancing the UI, while also upgrading tools to uphold a high-performance analytics system. Witnessing its expertise and ability to address specific issues greatly alleviated our security platform's primary concerns.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (8)
    3.9 3.9 (32)

  • WhiteSock Srl

    We transform Content into Games!

    We're an awarded serious games studio based in Florence specializing in designing and developing applied games and highly interactive multimedia experiences for educational projects, CSR activities, dissemination, training, and communication...

    Top Services:

    • Mobile App Development
    • VR/AR
    • Software Development
    • Creative Services
    • Digital Services
    • Show more
    Location
    Florence, Italy
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    9 Projects Listed

    WhiteSock Srl Services

    • Mobile App Development
    • VR/AR
    • Software Development
    • Creative Services
    • Digital Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Unicoop Firenze
    • Monogrid
    • Mirror
    • Sanoma
    • Giunti
    • Nerdo tv
    • Brandcross
    • Nume+
    • Università di Siena
    • Fondazione Villa Montesca
    Data sourced from the agency's DesignRush profile

    WhiteSock Srl Reviews & Testimonials

    • Paolo Lippi
      Paolo Lippi Production Manager at Nume+
      5.0 ★

      Gaming Review from Paolo Lippi

      In the past I had had the opportunity to appreciate Vincenzo's rare skills and when Nume Plus needed consultancy and a team capable of creating 3D and VR applications we had no doubts: WS was certainly the right interlocutor . In fact, he was able to interpret our needs and accompanied us throughout the entire construction process with attention and proactivity. In a complex area such as information technology, graphics and so-called new technologies, they have been able to combine creative invention, storyboarding ability and mastery of programming and graphics. It's not a little!

    • Laura Vaioli
      Laura Vaioli Manager at TheSign | Comics & Arts Academy
      5.0 ★

      Gaming Review from Laura Vaioli

      For TheSIGN Academy Whitesock is a precious partner. Not only because its founders and several team members are or have been teachers of game dev courses, but also because having a continuous comparison with an absolutely relevant player in the Italian gaming industry allows the academy to keep up to date on the needs of the industry, intercept trends and innovations related to the subjects taught in the courses and offer its students greater opportunities in terms of networking and professional opportunities. For those looking for a technological partner with high skills in game design and game development, I absolutely recommend Whitesock for its professionalism, reliability and enthusiasm.

    • Fabrizio Boldrini
      Fabrizio Boldrini General Director at Franchetti-Hallgarten Foundation at Villa Montesca
      5.0 ★

      Games Review from Fabrizio Boldrini

      The Villa Montesca foundation asked WS to develop an educational project on the topic of multi-religious school inclusion. To address this very specific topic, a game was created by mutual agreement that could allow boys and girls in schools across Europe to reflect on the topic of differences linked to the religion professed. It was a very positive experience which highlighted the professionalism of the developers and their ability to be flexible in a meeting with sector experts, among other things, bearers of different cultural and religious sensitivities. See the project on lifetwo.eu the game is called 40 answers.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.8 4.8 (5)
    5.0 5.0 (13)

  • Trango Tech

    Driving Change Through Technology - Apps, Ecommerce, Staff Aug, BPO, Next Gen Tech and more!

    Working with Trango Tech means you access a team of 200+ seasoned experts delivering transformative Software Development solutions—custom platforms, mobile apps, and enterprise systems. Clients trust our innovative approach to digital product engineering and seamless technology integration...

    Top Services:

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Web Design
    • Show more
    Location
    San Jose, California
    Number of Employees
    100 - 249
    Portfolios Count
    17 Projects Listed

    Trango Tech Services

    • Software Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Web Design
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Khaity
    • Shifaam
    • KIA
    • Click N Kollect
    • Helpp
    • Matchbox
    • OAKS
    Data sourced from the agency's DesignRush profile

    Trango Tech Reviews & Testimonials

    • Ashleigh J. Shim
      Ashleigh J. Shim Founder at Barefoot Player
      5.0 ★

      Mobile App Development Review from Ashleigh J. Shim

      Jane Miller and her team at Trango Tech have been phenomenal. They design a detailed and curated plan for your app design and development. I liked that Jane always made herself available to ensure the success of our company's app. Thank you Jane!

    • Fren D. Garcia
      Fren D. Garcia Procurement Manager at ClicknCollect
      4.8 ★

      Mobile App Development Review from Fren D. Garcia

      Had a fantastic experience working with Trango Tech for our eCom & app development needs. Their expertise in creating scalable and customized online stores was evident from the beginning. They provided valuable insights and suggestions that significantly improved my website's functionality and user experience. The Trango Tech team was responsive, communicative, and dedicated to meeting our specific needs. I'm thrilled with the end result and would highly recommend Trango Tech to anyone.

    • David V. Ringer
      David V. Ringer Marketing Manager at Helpp
      4.8 ★

      Mobile App Development Review from David V. Ringer

      The team at Trango Tech was very communicative and kept me informed throughout the entire development process. They provided regular updates on the progress of the project and were always available to answer any questions I had. They were very patient with my requests and made sure that my requirements were met to my satisfaction.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.6 4.6 (5)
    4.5 4.5 (6)

  • Design Your Site

    CMS 2.0 SEO, Speed & Security BakedIN

    You spend time imagining how you can more effectively use online technology to improve your business! Hello, I am Mary Putnam and I spend my time commanding digital technology to accomplish your goals with dynamic websites, cloud based applications, and digital strategy...

    Top Services:

    • Digital Marketing
    • Web Development
    • Mobile App Development
    • Web Design
    • SEO
    • Show more
    Location
    Tulsa, Oklahoma
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed

    Design Your Site Services

    • Digital Marketing
    • Web Development
    • Mobile App Development
    • Web Design
    • SEO
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Memberhaven
    • WL Walker
    • John 3:16 Mission
    Data sourced from the agency's DesignRush profile

    Design Your Site Reviews & Testimonials

    • Lynn Ezell
      Lynn Ezell Managing Member at SRI Energy
      5.0 ★

      Web Design Review from Lynn Ezell

      Design Your Site has done a remarkable job managing our SEO and providing website development and enhancement. They also manage our e-mails. I have found them to be very knowledgable and in pace with current technology and optimization requirements. If we have any questions or concerns, they are very quick to respond, explain, and resolve, if needed. We are very happy with the service and products.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (1)

  • NIX

    Custom Software Development

    NIX is a global software engineering company with over 3,000 professionals, delivering solutions that help everyone from SMBs to large enterprises scale, streamline operations, and achieve measurable results...

    Top Services:

    • Software Development
    • Staff Augmentation
    • AI Development
    • Cloud Consulting
    • Cybersecurity
    • Show more
    Location
    Tampa, Florida
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    8 Projects Listed

    NIX Services

    • Software Development
    • Staff Augmentation
    • AI Development
    • Cloud Consulting
    • Cybersecurity
    • Big Data Analytics
    • eCommerce Development
    • Managed Services
    • IT Services
    • IT Compliance Solution
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Verify
    • ALIENWARE
    • Cengage
    • Thomson Reuters
    • Blueprism
    Data sourced from the agency's DesignRush profile

    NIX Reviews & Testimonials

    • Menno Fink
      Menno Fink Review from Google
      5.0 ★

      Menno Fink's Review Sourced from Google

      I’m an independent web professional, working closely with a small network of fellow freelancers to deliver web projects. For well over a decade, I’ve relied on Nix United as a key technical partner across a wide range of projects. From complex custom solutions to smaller development tasks. They consistently deliver high-quality work. Fast, reliable and they are a always a pleasure to collaborate with. What sets them apart is their ability to think alongside you, their professional and efficient approach, and their broad technical skill set. Whether it’s backend development, front-end, infrastructure, or UX. They’re able to handle it all. What I value most is that I can truly rely on them. They’re not just highly skilled developers, they’re a partner I can build on. This allows me to serve my own clients better, knowing that I have a solid technical team to fall back on whenever needed. I wouldn't have been able to take on certain projects without Nix's support. They’re proactive, professional, and always a pleasure to communicate with. I’ve had countless moments where they stepped in quickly when time was critical. Working with them brings peace of mind. I worry less because I know they're by my side. If you’re looking for a dependable, capable, and genuinely human team to support your development needs, I highly recommend Nix United. Communication is always smooth, friendly, and proactive. They truly feel like an extension of my own team. Highly recommended.

    • Andriy Sydorenko
      Andriy Sydorenko Review from Google
      5.0 ★

      Andriy Sydorenko's Review Sourced from Google

      We had a truly pleasant experience interacting with the NIX team. We worked together on the development of the Resilience Hub psychological support platform. We are grateful to the team for their flexibility, professionalism, and adherence to deadlines. We would like to separately note the quality of communication, reliable technical support, and quick response to all requests. We are pleased with the results of our cooperation!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (12)

  • Dot Com Development

    The right team changes everything. We're that team for you!

    ON TIME, ON BUDGET ... SOLUTIONS EXCEEDING EXPECTATION. Professional Development You Can Trust...

    Top Services:

    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Scottsdale, Arizona
    Number of Employees
    Under 49
    Portfolios Count
    12 Projects Listed

    Dot Com Development Services

    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Web Design
    • UI/UX Design
    • AI Development
    • Big Data Analytics
    • WordPress Website Design
    • DevOps Consulting
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Digicel Group Ltd
    • Salt River Materials Group
    • Elevation Marketing
    • Arizona Kidney Disease and Hypertension Centers
    • Imagine Backyard Living
    • Flora and More
    • Paragon Vision Sciences
    • momAgenda
    • Storm Bowling
    • AutoWeek
    Data sourced from the agency's DesignRush profile
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  • Techjays

    The Best Way To Build Your Software.

    Our focus is on providing businesses with the tools they need to reach their maximum potential through the use of our cutting-edge software solutions. Launch your product to market 2x faster with Techjay's strong business domain experience, technical expertise, extensive knowledge of the latest industry...

    Top Services:

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Menlo Park, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $28/hr
    Minimal Budget
    $10,000 - $25,000

    Techjays Services

    • Software Testing
    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • HR Outsourcing
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Shipdude
    • Fayvit
    • CloudNine
    • Vidhire
    • Nakkheeran
    • Xtra Curriculum
    • SliverBack
    • CoSell
    Data sourced from the agency's DesignRush profile

    Techjays Reviews & Testimonials

    • Larry Miller
      Larry Miller Review from Google
      5.0 ★

      Larry Miller's Review Sourced from Google

      I've used Tech Jays for several projects, I love their work and love working with the team!

    • Corbin Miller
      Corbin Miller Review from Google
      5.0 ★

      Corbin Miller's Review Sourced from Google

      I've been working with Techjays since they started and have never been disappointed. On each project I have worked with them they have always delivered on time, on budget and with great quality. They adapt to the needs of the customer and have been in large part, more of a technical co-founder for my start ups. I'll continue to work with them and highly recommend them to anyone!

    • Jonathan Rodriguez
      Jonathan Rodriguez Review from Google
      5.0 ★

      Jonathan Rodriguez's Review Sourced from Google

      We've been working with TechJays the past 18+ months and the outsource experience has been great. They are agile and compared to previous outsource experiences, their competence, quality, and delivery punches above the rest.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (8)

  • SCD Information Technologies

    End-to-end customized software development and IT consulting services.

    SCD is a custom software development company based in Dubai, UAE. Since 2002, we have collaborated with innovative Startups, SMEs, and Enterprises from Western Europe, USA, Canada, & the Middle East. We have completed dozens of large-scale projects and plenty of smaller ones of various complexity...

    Top Services:

    • Software Development
    • Software Testing
    • AI Development
    • Mobile App Development
    • Big Data Analytics
    • Show more
    Location
    Dubai, United Arab Emirates
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    3 Projects Listed

    SCD Information Technologies Services

    • Software Development
    • Software Testing
    • AI Development
    • Mobile App Development
    • Big Data Analytics
    • Cloud Consulting
    • DevOps Consulting
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Henkel
    • Infineon Technologies
    • Brox-IT Solutions
    • Expedia
    • Infinitas Learning
    Data sourced from the agency's DesignRush profile

    SCD Information Technologies Reviews & Testimonials

    • Marcel Wyser
      Marcel Wyser Review from Google
      5.0 ★

      Marcel Wyser's Review Sourced from Google

      Great company to work with. Over the years, they developed several amazing applications for me and my clients and never let me down.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (1)

  • Logomish LLC

    Transforming Ideas Into Digital Masterpieces

    Our business, LOGOMISH, started out of a passion for helping small businesses thrive in the digital age. As entrepreneurs ourselves, we understand the challenges and obstacles that small business owners face, and we wanted to provide affordable and effective solutions to help them succeed...

    Top Services:

    • Logo Design
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Miami, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $20/hr
    Portfolios Count
    1 Project Listed

    Logomish LLC Services

    • Logo Design
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Mobile App Development
    • Social Media Marketing
    • SEO
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Tech Academy
    • Home Service
    • Fauget
    Data sourced from the agency's DesignRush profile

    Logomish LLC Reviews & Testimonials

    • Phil Biggs
      Phil Biggs Review from Google
      5.0 ★

      Phil Biggs's Review Sourced from Google

      Sophia Clark is an absolute creative powerhouse! She didn’t just design my social media posts—she exceeded every expectation I had. Her attention to detail, creativity, and ability to perfectly capture the essence of my brand blew me away. If you’re looking for someone who will truly elevate your social media presence, look no further. Thank you, Sophia, for your amazing work! I highly recommend her to anyone looking to take their visuals to the next level. You won’t be disappointed! Coach Phil

    • Helen Vasquez
      Helen Vasquez Review from Google
      5.0 ★

      Helen Vasquez's Review Sourced from Google

      Two days is all they took to CREATE a design for my logo and my business cards. Exceptional work, easy to understand and communicate with them, they provide recommendations based on your business needs and they deliver the product timely. No delays, no bots, no waiting period to hear back from them, no worries. Trust em, they are professionals and they are beyond passionate. They don’t just do the job, they partner with you to deliver an exceptional product. Special thanks to Jonathan, he was my dedicated account manager, he was an exceptional communicator and his team was very creative indeed. Thank you J ☺️

    • simeon quick
      simeon quick Review from Google
      5.0 ★

      simeon quick's Review Sourced from Google

      It was certainly a delight work with Hazel and John with my logo/decal needs, I was pleasantly suprised at their professionalism from start to finish. I don’t usually leave reviews, but these two had my back all the way. I definitely will be following tons of more business with this company because of the excellent work and commitment I received to keep me happy as a customer. I hope this company continues to serve the people I the way they inspire to!!! Great job Logomish!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.4 4.4 (27)

  • Jasthink Softwares

    Empowering Tomorrow, Today: Your IT Partner for Infinite Possibilities.

    Transforming the digital landscape, we go beyond being an IT services company; we are architects of digital transformation, dedicated to elevating your business through technology. Navigating the intricate IT terrain, we provide seamless software solutions and robust secure frameworks, ensuring your...

    Top Services:

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • SEO
    • Mobile App Development
    • Show more
    Location
    Chandigarh, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000

    Jasthink Softwares Services

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • SEO
    • Mobile App Development
    • CRM Consulting
    • Staff Augmentation
    • Branding
    • Cloud Consulting
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Hashching Ltd.
    • Advisr Pty Ltd.
    • Georama Inc.
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • PeakIT

    Passionate about new technologies

    We are a software development team with +18 years dedicated to new technologies for WEB and mobile, focused essentially on WEB3/Blockchain solutions, solutions to improve the visitor experience (Findify), and solutions for the church (Kyrios ChMS)...

    Top Services:

    • Software Development
    • Blockchain
    • Mobile App Development
    • eCommerce Development
    • Web Development
    • Show more
    Location
    Braga, Portugal
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed

    PeakIT Services

    • Software Development
    • Blockchain
    • Mobile App Development
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Web Design
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Diocésis de Lugo
    • Mosqueteiros
    • SUCH
    • Instituto Politécnico do Porto
    • Diário do Minho
    • Diocese de Lamego
    • Diocese de Portalegre-Castelo Branco
    • Arquidiocese de Braga
    • Universidade do Minho
    • Sonae
    Data sourced from the agency's DesignRush profile
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    3.8 3.8 (4)

  • Syed Ahmer Shah

    Design, Sync, Energize

    Syed Ahmer Shah is a Software Engineer & Full-Stack Developer building web, mobile, SaaS, and AI solutions for startups and growing businesses. I turn real business needs into secure, scalable, and maintainable products with a focus on performance, usability, and long-term value...

    Top Services:

    • Software Development
    • Web Development
    • SEO
    • Mobile App Development
    • AI Development
    • Show more
    Location
    Hyderabad, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    23 Projects Listed

    Syed Ahmer Shah Services

    • Software Development
    • Web Development
    • SEO
    • Mobile App Development
    • AI Development
    • WordPress Website Design
    • eCommerce Development
    • Web Design
    • UI/UX Design
    • Graphic Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Flowstep
    • Rania
    • Harshita
    • Emmanuel Chinedu
    • Alex
    • Ahmed
    • Olena Bomko
    • Fardeen
    • Tariq
    • Arsalan
    Data sourced from the agency's DesignRush profile
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