Explore leading eCommerce development companies in New Haven, Connecticut, that can help you grow your online presence. DesignRush features agencies trusted by major brands such as Estee Lauder and Heineken. With over 100,000 client-agency matches made monthly and 40,000+ vetted agencies, you can trust us to connect you with the best in the business. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.

Best New Haven eCommerce Agency Rankings

2 Companies - Rankings updated: June 30, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

United States × Connecticut × New Haven ×
  • Building Custom Software, web and mobile solutions

    Building Custom Software, web and mobile solutions

    TechAvidus is a Chicago-based eCommerce development firm that builds custom online stores on platforms including BigCommerce and Salesforce. The agency has delivered over 30 projects, including multi-vendor marketplaces, order management systems, and subscription platforms for retail and logistics clients.  [... see all TechAvidus reviews ]

    Top Services:

    • eCommerce Development
    • Drupal
    • IT Services
    Location
    New Haven, Connecticut
    Number of Employees
    100 - 249
    Average Hourly Rate
    $18/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    56 Projects Listed
  • Crafting Digital Experiences. Powered by Klise.

    Crafting Digital Experiences. Powered by Klise.

    Klise Consulting is your trusted partner for custom web and mobile app development. With a small team of highly skilled designers and developers, we deliver tailored solutions that prioritize quality and cost-effectiveness. Experience the difference of working with an experienced team to bring your digital  [... view Klise Consulting profile ]

    Top Services:

    • eCommerce Development
    • IT Services
    • Software Development
    Location
    New Haven, Connecticut
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000

About The Author and Expert Reviewer

Robert de Wit has a diverse background in advertising, marketing, IT, and healthcare. With a history as both a copywriter and a video game journalist, he specializes in SEO, long-form content creation, and crafting compelling copy that drives results. Currently, he writes about website and interface design at DesignRush, delivering the latest industry insights and analysis.

Former Development Director

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.