Best Smart Contract Companies

7 Companies-Rankings updated: October 30, 2026

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United States × Smart Contract Development × Energy & Mining × $25,000 - $50,000 ×Clear Filters
  • Cubix

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    Building Custom Software and Game Development Solutions Since 2008

    Clients cite responsive delivery and strong technical communication. Cubix ships production-ready software across React, Flutter, and enterprise ecommerce stacks, serving Fortune 500 accounts including Sony, Walmart, and PayPal since 2008.The Florida-based firm completed one mobile app in under six months...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • eCommerce Development
    • Show more
    Location
    West Palm Beach, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    21 Projects Listed

    Cubix Services

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • eCommerce Development
    • VR/AR
    • Blockchain
    • CRM Consulting
    • DevOps Consulting
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Politico
    • Big Fish Games
    • Walmart
    • Tissot
    • Sapient
    • Canon
    • WhiteCastle
    • Dreamworks
    • DataStream
    • Artizone
    Data sourced from the agency's DesignRush profile

    Cubix Reviews & Testimonials

    • Joe Foss
      Joe Foss Project Management at LMCC
      5.0★

      Mobile App Development Review from Joe Foss

      Cubix is a great partner and has consistently delivered high value and strong solutions for the concepts and features we look to implement into or daily workflows.The team is responsive, understands our model well, and provides a high level of quality on time. It has been a pleasure to work with them for over 5 years and counting.

    • Omar Khaled
      Omar Khaled CPO at Glamic Inc
      5.0★

      iPhone Review from Omar Khaled

      Team at Cubix are very professional. They are capable of developing anything and in high quality in a short amount of time. However, you need to be very clear with your expectations to avoid any delays.

    • Jean Franco Rivera
      Jean Franco Rivera President/Owner at JFR FINANCING LLC
      5.0★

      Gaming Review from Jean Franco Rivera

      The Domino NFT Game, also known as "Domino Earning World (DEW)," is a decentralized blockchain-based gaming platform that will bring together millions of domino enthusiasts in a community where you can buy, make your own, host games and tournaments at domino centers, with rewards such as real cash prizes, and morCubix, With its headquarters in Florida, USA, serves my company in the development of DEW for a worldwide deployment supporting innovative digital products that help me reach my goal

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Bringing awesome ideas to life

    Our mission at Closeloop Technologies is to empower enterprises with transformative Software Development, from advanced conversational AI and custom CRM/ERP to robust mobile apps and e-commerce platforms. With our extensive industry knowledge, achieving success in digital innovation is second nature...

    Top Services:

    • Software Development
    • Web Design
    • Mobile App Development
    • AI Development
    • Wearables
    • Show more
    Location
    Mountain View, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    31 Projects Listed
  • Unlock Tomorrow

    GET OUR EXPERT CONSULTING AND SOFTWARE ENGINEERING SERVICES...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Cloud Consulting
    • AI Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    25 Projects Listed
  • Think Big. Think The Apptitude - We build apps that build your business.

    Think Big. Think The Apptitude. This is not merely a slogan - we welcome challenges and deliver sustainable results as per the needs and timeline of clients. From startups to established businesses, The Apptitude has been helping brands succeed in the AI and digital world for well over 9 years...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • AI Development
    • eCommerce Development
    • Show more
    Location
    Houston, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed
  • Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions

    Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • Staff Augmentation
    • Show more
    Location
    Pleasanton, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed
  • Helping leaders use AI and technology to drive business growth

    We specialize in AI-driven digital transformation. With more than 100 successful projects and six Fortune 500 clients demonstrating our technical expertise and cost-effective nearshore services...

    Top Services:

    • AI Development
    • Software Development
    • Mobile App Development
    • UI/UX Design
    • IoT
    • Show more
    Location
    Miami, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed
  • Accelone Advancing What's Possible

    Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

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Agencies vetted
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2

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We review agency work, case studies, and results to confirm skill.

Applicants rejected
48%
3

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Agencies verified
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