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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  • Vention

    Verified Verified by the DesignRush team for authenticity and credibility.

    Engineering peace of mind

    Vention builds custom software across fintech, healthtech, and eCommerce, for clients like ClassPass, Mount Sinai, and Slice. Its ISO 27001-certified team serves 30+ industries and over 500 clients. With 20+ years of experience, the software development firm is best for businesses needing scalable...

    Top Services:

    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Software Testing
    • Web Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    15 Projects Listed

    Vention Services

    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Software Testing
    • Web Development
    • Blockchain
    • AI Development
    • Cloud Consulting
    • CRM Consulting
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IBM
    • PayPal
    • Cuvva
    • Costa Coffee
    • Memrise
    • Urban
    • Tailored Dog Food Delivery
    • RealVNC
    • Label on a Cable
    • ClassPass
    Data sourced from the agency's DesignRush profile

    Vention Reviews & Testimonials

    • Lee Tupper
      Lee Tupper CTO at Remotiv (formerly Financial Soundings)
      3.8 ★

      Mobile App Development Review from Lee Tupper

      Vention has delivered excellent design prototypes and accurate time estimates. The app is still in beta mode, and the partnership with [...] Vention will [continue] until the release of the next version. Vention is a reliable team that offers quality service. (Verified via email)

    • Jon Wade
      Jon Wade CTO & Founder at Union54
      5.0 ★

      Staff Augmentation Review from Jon Wade

      Vention’s efforts allowed the successful development of the product, resulting in new customers. They provided backend developers, business analysts, UI designers, and QA testers to develop our solution. Vention cultivated a seamless partnership through constant updates and a collaborative approach. Overall, their team’s well-rounded expertise was impressive.

    • AJ Canty
      AJ Canty CTO and Co-Founder at Primer
      5.0 ★

      Web Development Review from AJ Canty

      We’ve been working with Vention for quite some time and consider them an extension of our team, rather than an offshore vendor. We needed solid mobile developers to work with our in-house engineers to build our Primer SDKs on both mobile platforms. This was not a trivial thing as it required a lot of cross-functional communication, but the Vention team was up to the challenge. They quickly adopted the best practices we follow at Primer and proved to be effective and proactive.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.6 4.6 (6)
    4.9 4.9 (18)

  • Bellosoft Limited

    Technology Connects

    Bellosoft is a global software development agency helping businesses scale through custom solutions in web, mobile, AI, and cloud technologies. With a focus on innovation, agility, and measurable results, we partner with startups and enterprises in the US, UK, and Europe to deliver reliable products and...

    Top Services:

    • Software Development
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • eCommerce Development
    • Show more
    Location
    Watford, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed

    Bellosoft Limited Services

    • Software Development
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • eCommerce Development
    • AI Development
    • Software Testing
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Modern Tribe
    • Greyhound Racing Ireland
    • Unrvld
    • Levo
    • Moran's Catering
    • Novo Digital
    • Sentel
    • Mortgage Propeller
    • Etain
    • FBA
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Lune Agency

    Crafting Digital Masterpieces.

    At Lune Agency, we delve beyond the surface to unearth the essence of your brand. Our journey begins in the depths of your industry's ocean, navigating through the currents of your audience and the tides of your competition. We believe that the heart of differentiation lies in the why of your actions...

    Top Services:

    • Digital Services
    • Digital Strategy
    • Web Design
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Lahore, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    6 Projects Listed

    Lune Agency Services

    • Digital Services
    • Digital Strategy
    • Web Design
    • UI/UX Design
    • eCommerce Development
    • Advertising
    • Social Media Marketing
    • Mobile App Development
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • 360TourMasters
    • Bench
    • Vetster
    • Nordstrom
    • Asus
    • GigaByte Technology
    Data sourced from the agency's DesignRush profile

    Lune Agency Reviews & Testimonials

    • Tariq Syed. FCCA
      Tariq Syed. FCCA Head of Finance at Curzon street partners Ltd
      5.0 ★

      Digital Services Review from Tariq Syed. FCCA

      The project was completed to the highest standard, excellent output and up to the Mark. The company is very pleased to hire you and we highly recommend you for a similar project.

    • Muneer Nekiar
      Muneer Nekiar Project Manager at 360 TM
      5.0 ★

      Promotional Marketing Review from Muneer Nekiar

      Working with Abdullah was an absolute delight! From the moment we connected, he showed a genuine understanding of my company's needs and worked tirelessly alongside me to ensure every detail was nothing short of perfection. His patience and dedication made the entire process feel effortless and enjoyable. I cannot thank Abdullah enough for his professionalism and expertise. Without hesitation, I wholeheartedly recommend him to anyone in search of a seamless and top-notch experience. Trust me, you won't be disappointed! - Mo, 360 TM

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.5 4.5 (2)

  • nolimix

    Crafting brands, websites & software solutions!

    Nolimix Agency is a full-service creative studio dedicated to transforming ideas into impactful digital experiences. Specializing in branding, web design, and application development, we craft visually stunning and functional solutions that connect businesses with their audiences. From modern marketing pages...

    Top Services:

    • Graphic Design
    • UI/UX Design
    • Web Design
    • Branding
    • Logo Design
    • Show more
    Location
    Niš, Serbia
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    nolimix Services

    • Graphic Design
    • UI/UX Design
    • Web Design
    • Branding
    • Logo Design
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PawPass
    • Campio.no
    • EPO
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Bytewise Design

    Custom Websites, Software, Branding, and Digital Marketing for Small-to-Midsize Businesses.

    You know where youd like your company to go. We can help you get there by solving problems with strategy, creativity, and technology. Its not just about writing code - its about designing and implementing the right strategy and solution for your specific needs...

    Top Services:

    • Web Design
    • Web Development
    • Software Development
    • Digital Strategy
    • Mobile App Development
    • Show more
    Location
    Wrentham, Massachusetts
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed

    Bytewise Design Services

    • Web Design
    • Web Development
    • Software Development
    • Digital Strategy
    • Mobile App Development
    • eCommerce Development
    • Branding
    • Logo Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • John Deere
    • Epicor
    • Alex and Ani
    • HostGator
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Sketch Development Services

    Verified Verified by the DesignRush team for authenticity and credibility.

    Build it. Run it. Own it.

    Sketch delivers AI-enabled custom software and DevOps via a subscription model with two-week delivery cycles, citing zero missed deadlines. Its team serves Fortune 500 clients and is best suited for product teams needing a transparent, agile dev partner without long-term contracts...

    Top Services:

    • Software Development
    • Cloud Consulting
    • UI/UX Design
    • eCommerce Development
    • DevOps Consulting
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up

    Sketch Development Services Services

    • Software Development
    • Cloud Consulting
    • UI/UX Design
    • eCommerce Development
    • DevOps Consulting
    • Staff Augmentation
    • AI Development
    • Software Testing
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • U.S. Bank
    • Centene Corporation
    • Maritz
    • Change Healthcare
    • Stifel
    • Reinsurance Group of America (RGA)
    • bioMerieux
    • CareSource
    • CENTEGIX
    • Purina
    Data sourced from the agency's DesignRush profile

    Sketch Development Services Reviews & Testimonials

    • Monica
      Monica Review from Google
      5.0 ★

      Monica's Review Sourced from Google

      Amazing and talented people. I’ve worked for both client and agency side and can can say their partnership is amazing. They truly care about ongoing operations and not just ending it at a project level. Highly recommend! Message me if you want specifics.

    • John Andesilich
      John Andesilich Review from Google
      5.0 ★

      John Andesilich's Review Sourced from Google

      I own a marketing firm in Troy MO and I recently met with Calvin at Sketch Development Services to discuss a software development project I have been thinking about pursuing. He was very nice, easy to speak to and even though his field is a bit out of my knowledge base, he was able to explain things in a way that made perfect sense. I look forward to working with him and his team in the future and recommend anyone looking for a software or app development company to give them a try.

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

  • Sparkware Solutions

    Ignite What's Next

    Sparkware Solutions is a Virginia-based digital agency that helps small businesses grow faster, operate leaner, and scale smarter through strategic web development, AI-driven automation, and intelligent marketing systems...

    Top Services:

    • Digital Marketing
    • AI Development
    • Web Development
    • Mobile App Development
    • Show more
    Location
    Richmond, Virginia
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000

    Sparkware Solutions Services

    • Digital Marketing
    • AI Development
    • Web Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Hollywood Records
    • Tadaima Rolls
    • Sundarri
    • Availio
    • Cazcarro
    • RSSence
    • KitKatCakes
    • Vanessa Aragon
    • Black Cherry Art
    • Barklenciaga
    Data sourced from the agency's DesignRush profile

    Sparkware Solutions Reviews & Testimonials

    • K Fortune
      K Fortune Review from Google
      5.0 ★

      K Fortune's Review Sourced from Google

      Silver Spark Studio took my initial ideas brought them to life. They were attentive, the process was collaborative, and they were receptive to my feedback and made changes as needed. They helped me navigate a critical planning stage in my small business and I will continue to consult with them for future steps.

    • Y. O.
      Y. O. Review from Google
      5.0 ★

      Y. O.'s Review Sourced from Google

      Silver Spark delivered focused, constructive feedback that helped us see where the experience was falling short and where it was on the right track. They called out usability issues like the floating, unclickable cookie banner and lack of navigation back to the main site from portfolio demos—both small things that impact trust and flow. Their suggestion to replace client logos with actual work mockups shifted our perspective on how to better showcase our value. They also emphasized how underwhelming the hero section felt and encouraged us to treat it with the weight it deserves as a first impression. On the positive side, they acknowledged our strong branding and clear communication, and gave a nod to our solid SEO and best practices. Their tip to expand the FAQ as a low-effort SEO boost was especially helpful. Overall, the feedback was thoughtful, to the point, and gave us a practical path forward.

    • Arbaz Riaz
      Arbaz Riaz Review from Google
      5.0 ★

      Arbaz Riaz's Review Sourced from Google

      Working with Silver Spark was a great experience. They took the time to really understand our goals and challenges, and their UX advice was both strategic and practical. Their guidance helped us move the project forward with confidence. Throughout the process, they were professional, responsive, and clearly dedicated to delivering quality.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (10)

  • Starkey Digital

    Bespoke Web Design & Development Studio In Chester, UK.

    Starkey Digital is a web agency based in Chester, UK, specialising in bespoke website design, web development, and digital experiences. We build high-performance sites with modern frameworks like SvelteKit, Three.js, and Cloudflare Workers crafted for speed, visual impact, and results...

    Top Services:

    • Digital Services
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Chester, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    Under $1,000

    Starkey Digital Services

    • Digital Services
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • UI/UX Design
    • Mobile App Development
    • Software Development
    • IT Services
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Greengage Business Solutions
    • The Pottery Rooms
    • Little Padron
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Codesert Technolab

    Outshine the intellect of coding.

    Codesert is a group of professionals working to inspire change and innovation through excellent results. The completion of more than 100 custom mobile and web development projects for various requirements is what drives the growth...

    Top Services:

    • Digital Services
    • Graphic Design
    • Creative Services
    • Logo Design
    • Design Services
    • Show more
    Location
    Surat, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    8 Projects Listed

    Codesert Technolab Services

    • Digital Services
    • Graphic Design
    • Creative Services
    • Logo Design
    • Design Services
    • Web Design
    • eCommerce Development
    • WordPress Website Design
    • Web Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The Tactical Co
    • Wolf Spring
    • CrossFit
    • Presentail LLC
    • Saker Group
    • Stone Group
    • Portcast
    • ContenBCN
    Data sourced from the agency's DesignRush profile

    Codesert Technolab Reviews & Testimonials

    • Mark Gorman
      Mark Gorman Review from Google
      5.0 ★

      Mark Gorman's Review Sourced from Google

      I enjoy working with Amitish and the Codesert Technolab team. They provide quality work, meet deadlines and offer great pricing. I always feel confident when I bring them a new project. I highly recommend them.

    • rajnee makwana
      rajnee makwana Review from Google
      5.0 ★

      rajnee makwana's Review Sourced from Google

      Codesert is an expert in web development and mobile app development. They deliver excellent work and provide real solutions. Codesert can help you turn your vision into reality. They are the best IT company for high-quality services.

    • raju solanki
      raju solanki Review from Google
      5.0 ★

      raju solanki's Review Sourced from Google

      It's a IT company. This is service base company. It provides softwares on different different platforms using different different languages to it's client. This is one of the best IT company in Surat, Gujarat. In this company, work on multiple languages like Dot Net, php, Android, iOS, React Native, Angular, Java and etc. This company's environment is also good for everyone.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (19)

  • CoTask IT Solutions

    Empowering Your Digital Success, One Click at a Time.

    Amplify your online impact with our dynamic digital marketing agency. We craft tailored strategies, from SEO and social media to content creation, to drive your brand's growth. Harness the digital landscape effectively with our expert team. Elevate your online presence and connect with your audience like...

    Top Services:

    • SEO
    • Digital Marketing
    • Graphic Design
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Dubai, United Arab Emirates
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000

    CoTask IT Solutions Services

    • SEO
    • Digital Marketing
    • Graphic Design
    • eCommerce Development
    • WordPress Website Design
    • PPC
    • Social Media Marketing
    • eCommerce
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Letsbuy99
    • ecoway
    • UAEJJF
    Data sourced from the agency's DesignRush profile

    CoTask IT Solutions Reviews & Testimonials

    • Rahul Dogra
      Rahul Dogra Review from Google
      5.0 ★

      Rahul Dogra's Review Sourced from Google

      We partnered with CoTask IT Solutions as our Google Ads agency Dubai, and it's been a great decision. Our campaigns are performing much better, and we're seeing a stronger ROI. Their team is proficient, always optimizing, and provides clear reports. Definitely a leading Google Ad company in Dubai.

    • Khushal Kashyap
      Khushal Kashyap Review from Google
      5.0 ★

      Khushal Kashyap's Review Sourced from Google

      As a growing business in Dubai, we needed a digital marketing agency that truly understood the local landscape. CoTask IT Solutions has been fantastic. They developed a comprehensive strategy that's already showing results in terms of leads and brand visibility. Their team is proactive and professional.

    • siyana bashi
      siyana bashi Review from Google
      5.0 ★

      siyana bashi's Review Sourced from Google

      Our brand needed a stronger presence on social media. CoTask IT Solutions provided excellent social media marketing services. They crafted engaging content and managed our campaigns effectively, leading to increased engagement and followers in Dubai. We're very happy with their creative approach

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (7)

  • Sycosure

    Don't Just Be Sure, Be Sycosure

    We're a family-owned company in Southern California that strives to provide effective online marketing solutions and business processes that we tailor for the individual needs of each business...

    Top Services:

    • Web Design
    • Business Consulting
    • Graphic Design
    • Web Development
    • Show more
    Location
    La Quinta, California
    Number of Employees
    Under 49

    Sycosure Services

    • Web Design
    • Business Consulting
    • Graphic Design
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Black Hat World
    • DotCom Consultancy
    • Southwest Tax Associates
    • Tsakanikas Law
    • Exotic Birds Unlimited
    • Bavarian Auto Repair
    • Rockeys Locksmith
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Sauf Digital

    The future of your digital business.

    Founded in 2019, Sauf Digital is a web design and development agency dedicated to creating professional and engaging websites that captivate your clients and customers. Inspired by Thomas Watson Jr.'s principle that "good design is good business," we achieve perfection by ensuring each component of your...

    Top Services:

    • Web Design
    • UI/UX Design
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • Show more
    Location
    Karachi, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed

    Sauf Digital Services

    • Web Design
    • UI/UX Design
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • Branding
    • Product Design
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Sparvel
    • GAP, Chile
    • 365Paws
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

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