Best US JavaScript Development Companies

3 Companies - Rankings updated: September 03, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

United States × JavaScript Development × Social Networks × $25,000 - $50,000 × Clear Filters
  • Cubix

    Verified Verified 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
    100 - 249
    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 mor Cubix, 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
  • 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

    The Apptitude Services

    • Software Development
    • Mobile App Development
    • Blockchain
    • AI Development
    • eCommerce Development
    • Web Development
    • Digital Services
    • Digital Marketing
    • CRM Consulting
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Glam Grid
    • LiftLine
    • Yoga Unity
    • BalanceMe
    • Bloom Rate
    • Curb
    • Glo
    • Lyst
    • Fieldwire
    • Waking Up
    Data sourced from the agency's DesignRush profile

    The Apptitude Reviews & Testimonials

    • John Kennedy
      John Kennedy Co-Founder at Breava
      5.0

      Mobile App Development Review from John Kennedy

      The team at The Apptitude did a wonderful job of understanding my requirements and delivering the best results possible. From the initial consultation phase of my project to the final phases and optimization, the team showed utmost professionalism and expertise. The initial UI/UX turned out to be beautiful, seamless, and user-centric, as I had in mind. The team’s dedication, support, and skills is top-notch and their communication is cooperative and timely. I highly recommend The Apptitude for app development.

    • Julian Hayes
      Julian Hayes VP Marketing at PrixmaStudios
      4.8

      Mobile App Development Review from Julian Hayes

      Super happy with the final product, though we had a few back-and-forths on design details. The team was patient and nailed it in the end. They partnered with us. Gave honest feedback and suggested features we hadn’t thought of. Felt like having in-house devs without the overhead.

    • Ronak Chandrana
      Ronak Chandrana CEO at Fittedup
      5.0

      Mobile App Development Review from Ronak Chandrana

      It was a great journey working with The Apptitude. From the initial consultation phase to the final phases and maintenance of the Fittedup project, everything was up to the mark. The team worked dedicatedly and passionately, showcasing great skills and expertise. We had a long and deep consultation meeting where they understood my vision and from there, everything went smoothly. I would surely recommend The Apptitude for high-quality mobile app development and marketing. Thank you for making everything seem so easy!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We Help You Build Your Software Projects Your Way.

    Expert software developers delivering top-tier web and mobile apps for startups and SMBs. With diverse industry experience spanning e-commerce, fintech, online dating, media, and travel, we bring a wealth of expertise to every project...

    Top Services:

    • Staff Augmentation
    • Mobile App Development
    • Software Development
    • Software Testing
    • Web Development
    • Show more
    Location
    St. Petersburg, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000

    Softrizon LLC Services

    • Staff Augmentation
    • Mobile App Development
    • Software Development
    • Software Testing
    • Web Development
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Audicaster
    • Orcas Cupid
    • Alopago
    • Avele
    Data sourced from the agency's DesignRush profile

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