Best US JavaScript Development Companies

13 Companies - Rankings updated: September 03, 2026

DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.

United States × JavaScript Development × Supplements × Sort by: Avg Hourly Price: High to Low × Clear Filters
  • Conversion Rate Experts to Help Maximize Performance

    A leading conversion rate optimization (CRO) agency with over a decade of experience in driving measurable results. Leveraging extensive user testing and versatile platform expertise, the agency delivers tailored strategies to enhance user experiences and boost revenue...

    Top Services:

    • CRO
    • Digital Strategy
    • UI/UX Design
    • eCommerce Development
    • Web Development
    • Show more
    Location
    Jacksonville, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $1,000 - $10,000

    Convincify Services

    • CRO
    • Digital Strategy
    • UI/UX Design
    • eCommerce Development
    • Web Development
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Barstool Sports
    • Mercury Insurance
    • Humana
    • Fanatics
    • Kaplan
    • MyUS
    • Vega Protein
    • Great Lakes Wellness
    Data sourced from the agency's DesignRush profile
  • Shopify Plus agency - Small US-based team of experts building amazing things with Shopify.

    Gapstow is your U.S.-based Shopify partner, offering custom development, strategic guidance, and fractional eCommerce leadership to brands. Let us fuel your brand's growth, streamline your eCommerce operations, and deliver the agile, personalized support you need every step of the way...

    Top Services:

    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Web Design
    • Digital Strategy
    • Show more
    Location
    Strongsville, Ohio
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    16 Projects Listed

    Gapstow Services

    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Web Design
    • Digital Strategy
    • UI/UX Design
    • CRO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • MiLà Soup Dumplings
    • Copper Cow Coffee
    • ROAM Adventure Co.
    • Wulf's Fish
    • Savenor's Butchery
    • Reprise Health
    • Haven Home
    • Beard Coalition
    • Hawaiian Shaved Ice
    • Alaskan King Beds
    Data sourced from the agency's DesignRush profile

    Gapstow Reviews & Testimonials

    • Kate Strollo
      Kate Strollo Director of Ecommerce & Digital Marketing at Copper Cow Coffee
      5.0

      Web Development Review from Kate Strollo

      I cannot speak highly enough of the team over at Gapstow. Shawn goes above and beyond to ensure value for his clients, as does his team of project managers and web developers. Pricing and timelines were always crystal clear, and the team overall is responsible and incredibly easy to work with. This is the first and only development agency I've truly ever felt comfortable working with. I would recommend them to anyone and would absolutely work with them again in the future.

    • Nicholas Mazzanti
      Nicholas Mazzanti CEO at ROAM Adventure Co.
      5.0

      eCommerce Development Review from Nicholas Mazzanti

      An Irreplaceable Partner in Our eCommerce Success The Gapstow Team has been an absolutely critical component of our Shopify operations. From advanced inventory management to custom features across multiple stores, theyve handled every challenge weve thrown at themflawlessly. Their integrations with Google Sheets, Amazon, fulfillment software, and NetSuite have streamlined our entire backend. Beyond their technical skills, what truly sets them apart is their speed, responsiveness, and exceptional critical problem-solving ability. Communication is always clear, fast, and proactive, and we never feel left in the dark. If youre serious about scaling your eCommerce business, Gapstow is the team you want in your corner.

    • Tiffany Pierson
      Tiffany Pierson Global Logistics Manager at ROAM Adventure Co
      5.0

      eCommerce Development Review from Tiffany Pierson

      This place is extremely professional and did such a great job for my company! Shawn is the best and is so responsive. I definitely recommend this company!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Award Winning E-Commerce Marketing Agency

    All of the work we do more than pays for itself with increased trackable revenue...

    Top Services:

    • eCommerce
    • Email Marketing
    • Web Design
    • eCommerce Development
    • Web Development
    • Show more
    Location
    Schenectady, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $1,000 - $10,000

    ECD Digital Strategy Services

    • eCommerce
    • Email Marketing
    • Web Design
    • eCommerce Development
    • Web Development
    • Media Buying
    • PPC
    • CRO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Saratoga Olive Oil
    • Name Bubbles
    • Feltman's Of Coney Island
    • Sticker & Co
    • Labels to Last
    Data sourced from the agency's DesignRush profile

    ECD Digital Strategy Reviews & Testimonials

    • Madeleine DiBiase
      Madeleine DiBiase Review from Google
      5.0

      Madeleine DiBiase's Review Sourced from Google

      Working at ECD is the best! The founder, Zak, embodies the company values through and through. Most of all, he cares–about his clients and his team. Excellence is expected 💪 Getting to work with various clients across different industries is fun, challenging, and different everyday. It's especially rewarding seeing their revenue grow year over year like a rocketship🚀 I've worked at a few other companies, and nothing compares to the culture and people at ECD.

    • Roy Wright
      Roy Wright Review from Google
      5.0

      Roy Wright's Review Sourced from Google

      If you have an e-commerce store and are looking to grow definitely contact ECD Digital Strategy. The are E-commerce Email Marketing Gurus and can help your online business grow profitably.

    • Clint Braidwood
      Clint Braidwood Review from Google
      5.0

      Clint Braidwood's Review Sourced from Google

      I love this company. They make managing google ads and website maintenance easy and streamlined. I don't know where our company would be without ECD!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • From Clicks to Profit Pathway

    Traffic Dojo - Marketing funnels for any type of business. With over 5 years of extensive experience in affiliate marketing and a focus on crafting strategic marketing funnels, we're dedicated to delivering innovative strategies tailored to fuel your growth...

    Top Services:

    • Digital Marketing
    • PPC
    • Web Development
    • Branding
    • Content Marketing
    • Show more
    Location
    Santa Ana, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000

    Traffic Dojo Inc Services

    • Digital Marketing
    • PPC
    • Web Development
    • Branding
    • Content Marketing
    • Affiliate Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PIN-UP Global
    • 1Win
    • Business Inception
    • RevenueLab
    • G-Partners
    • Chilli Partners
    • Leadreaktor
    Data sourced from the agency's DesignRush profile

    Traffic Dojo Inc Reviews & Testimonials

    • Max Golovan
      Max Golovan Chief Executive Officer at Business Animation Studio 7030.studio
      5.0

      Web Design Review from Max Golovan

      We hired Traffic Dojo for our website, SEO, and social media marketing. They designed, developed, configured and launched a new website for us. The project began with understanding requirements, doing wireframes and prototyping. Once we approved the workflows, wireframes, and mockups, the actual work began from their side. In couple of weeks a functional version was ready with dummy content for user testing. Improvements were made as per our guidelines and responsiveness were tested along side the testing. Final version of site was made live in another 2-3 weeks time after our approval. SEO work was started and mapped every month.

    • Austin Arthur
      Austin Arthur CO-CEO at Stars and Stripes Management Systems
      5.0

      Digital Marketing Review from Austin Arthur

      We hired Traffic Dojo to help with SEO services and manage our Google ads efficiently, Our main goals were to make our website visible and help achieve our business marketing goals as well. We took the help of Traffic Dojo to get experts on board who can help us with our ultimate goal. With their help, we were able to make our website appear higher in SERPs organically. We ran Google Ads to promote some of our services, but the rest of the website was optimized to rank organically. They used a lot of methods and it took time, but in the end, it worked. Traffic Dojo gave us a timeline and they delivered within that.

    • Rae Felte
      Rae Felte Director of Brand Strategy at Vention
      5.0

      Web Design Review from Rae Felte

      Traffic Dojo built our website from scratch using Craft. When I first talked to them, We spent almost an hour talking, and they answered my questions. I knew what I wanted, but I didn't know how to get there, so Traffic Dojo told me what they thought. After our first conversation, they made a proposal and mailed it to me. They walked me through the project and what to expect. Then, they put together a platform and sent it for review. The website was an information page and also, users could contact us through email to send information. Traffic Dojo knew what they were doing. They listened to what we wanted and made it work. Overall, they were good at their job, and we made an excellent team.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your AI + Healthcare Development Partner

    Your healthcare development partner: We build digital health products that leverage generative AI to improve patient care, operation costs, and provider burnout...

    Top Services:

    • Mobile App Development
    • Web Design
    • Web Development
    • UI/UX Design
    • AI Development
    • Show more
    Location
    Irvine, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed

    Topflight Apps Services

    • Mobile App Development
    • Web Design
    • Web Development
    • UI/UX Design
    • AI Development
    • Product Design
    • Wearables
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Merck
    • Medable
    • Stanford Medicine
    • Cedars-Sinai Medical Center
    • Cleveland Clinic
    Data sourced from the agency's DesignRush profile
  • Your Dedicated Team for High-Performing Websites

    We focus on refining brand positioning and user experience to grow your business online quickly. We'll create your dream website, manage it like pros, and be your on-demand resource for all design needs...

    Top Services:

    • Web Design
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • UI/UX Design
    • Show more
    Location
    Ventura, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000

    Reciprocal Services

    • Web Design
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • UI/UX Design
    • SEO
    • CRO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Lamb & Co
    • Good Sense Foods
    • Seymour Duncan
    • United Pet Care
    • AMI Strategies
    • JL Remodeling, Inc.
    • It's Nola
    • Champions Round
    • Thryv
    • ChowNow
    Data sourced from the agency's DesignRush profile
  • Where a fine art approach to web and media content meets technical precision and care.

    Working with clients to create a natural aesthetic and integrated technologies for web and print communications since 2016...

    Top Services:

    • Web Design
    • Web Development
    • Video Production
    • Graphic Design
    • Branding
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $90/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed

    Golden Stupa Media, LLC Services

    • Web Design
    • Web Development
    • Video Production
    • Graphic Design
    • Branding
    • Logo Design
    • Print Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GROF Legacy Project
    • Weber, Hayes & Associates (WHA)
    • Burton Water Cooperative
    Data sourced from the agency's DesignRush profile
  • Simplify. Innovate. Succeed.

    Digital Folks is the most trusted website design and digital marketing company in Vancouver, Canada and the USA...

    Top Services:

    • Graphic Design
    • Design Services
    • Web Design
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Portfolios Count
    8 Projects Listed

    DIGITAL FOLKS INC Services

    • Graphic Design
    • Design Services
    • Web Design
    • eCommerce Development
    • WordPress Website Design
    • Web Development
    • UI/UX Design
    • Digital Marketing
    • SEO
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GD SUPPLIERS
    • Boultaudio
    • Vkkohinoor
    • VRCO
    • Medy
    • Expertbells
    • Boult Audio
    • Ask Henery
    • Surjen
    • SubAbb
    Data sourced from the agency's DesignRush profile

    DIGITAL FOLKS INC Reviews & Testimonials

    • Olivia James
      Olivia James Marketing Specialist at NCR Voyix
      5.0

      Web Design Review from Olivia James

      While metrics can't be shared at the moment, the client was highly impressed with the test results that intent was able to successfully deliver. The team was highly communicative, and internal stakeholders were particularly impressed with their vast UI/UX design knowledge and experience.

    • Liam Hardie
      Liam Hardie Senior program marketing executive at Infinigate Cloud
      5.0

      Web Development Review from Liam Hardie

      Digital folks stands out for their feedback. Moreover, their resources have top-notch communication skills; theyre always on top of their game, They keep track of issues and are responsive to the needs of the project and client.

    • Will Smith
      Will Smith General Manager at Charter Oak Advisory
      5.0

      Web Development Review from Will Smith

      The project was started with the intention of updating our web presence and providing a better means of promoting our wide range of business consulting and services. We had a great experience working with the Digital Folks team, and the website served to highlight our experience, encourage client contact, and harmonize our digital image with the creative solutions we offer. They worked well together, showed a thorough understanding of our business needs, and proved that they were committed to creating a website that complemented our brand and service offerings.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Shopify Development Partner For Growing Ecommerce Brands

    OptraSeven builds and optimises Shopify stores for ecommerce brands custom themes, apps, and conversion-focused storefronts...

    Top Services:

    • eCommerce Development
    • Web Development
    • Web Design
    • CRO
    • Software Testing
    • Show more
    Location
    Albuquerque, New Mexico
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    24 Projects Listed

    OptraSeven Services

    • eCommerce Development
    • Web Development
    • Web Design
    • CRO
    • Software Testing
    • Software Development
    • SEO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Luxe Caviar
    • Kivro
    • Hot Monkey Nuts
    • Onward Ability
    • We Luv Eco
    • Illuma Wellness
    • Anglo Healthcare
    • PRISE Academy
    • EW Villa Medica
    • Concord Stem Cell Limited
    Data sourced from the agency's DesignRush profile
  • Agility. Performance. Scale.

    JetSoftPro comprises a network of tech professionals dedicated to helping your business achieve its technology objectives through exceptional software development and data science expertise. Our team is committed to delivering superior solutions that drive your success...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • VR/AR
    • Blockchain
    • Show more
    Location
    Denver, Colorado
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    JetSoftPro Services

    • Software Development
    • Mobile App Development
    • Web Design
    • VR/AR
    • Blockchain
    • IoT
    • eCommerce Development
    • Web Development
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • CreatorIQ
    • Prezzo
    • Aspen Fields Services
    • Kodexe
    • Techno Care
    • Consolidate
    • Aftersow
    • Innocode
    • YogaDownload
    • Wyzoo
    Data sourced from the agency's DesignRush profile

    JetSoftPro Reviews & Testimonials

    • Iryna
      Iryna Review from Google
      5.0

      Iryna's Review Sourced from Google

      I am happy to be a part of JetSoftPro team. This is the company where employees are highly valued and clients receive top-quality deliverables.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Satisfaction, Our concern

    Why Protocloud Technologies? Award Winner - TOP E-COMMERCE DEVELOPERS 2023 Award Winner - Top Web Development Companies 2023 Over the last 12 years, developed 800+ projects Worked with Brands Wayfair, United Rentals, & many more. 30-60 day Free maintenance period after Go-live...

    Top Services:

    • eCommerce Development
    • Web Design
    • WordPress Website Design
    • Design Services
    • Mobile App Development
    • Show more
    Location
    Stockbridge, Georgia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    38 Projects Listed

    Protocloud Technologies Services

    • eCommerce Development
    • Web Design
    • WordPress Website Design
    • Design Services
    • Mobile App Development
    • Web Development
    • Branding
    • Graphic Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Rigla
    • IT Factory
    • Brillianteers
    Data sourced from the agency's DesignRush profile

    Protocloud Technologies Reviews & Testimonials

    • David Marsa
      David Marsa Founder at Wellola
      5.0

      eCommerce Development Review from David Marsa

      The team was very easy to communicate with. They responded very quickly. We used both Skype and Upwork for communication, and shared files via drop box. Quick response, they never hesitated to answer questions and rework some aspects of the website.

    • brent hicks Vice president at chemfax
      5.0

      eCommerce Development Review from brent hicks

      The results are perfect, exactly what I requested. In fact, they even added design elements that I would have never thought of that made it perfect. All requested functionality was provided without any issues. Overall, they did a fantastic job.

    • Danika Dry Brand Coordinator at Clover & Cobbler
      5.0

      Web Development Review from Danika Dry

      The team was a pleasure to work with and produced a top-notch website with outstanding professionalism and efficiency! We re-launched our website with the hopes of developing a stronger brand identity, and Protocloud's recommendationswhich covered both brand strategy and the overall websitehelped us achieve that goal. Any business trying to improve their website will benefit from my recommendation of them!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Cutting-Edge Web, Software & AI Development Company

    TechVerdi a cutting-edge development company offering web, software, mobile app, and AI solutions to create scalable, innovative solutions for businesses...

    Top Services:

    • Software Development
    Location
    Santa Clara, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $20/hr
    Portfolios Count
    1 Project Listed

    TechVerdi Services

    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Artiflex
    • Hiro.FM
    • Pipelean
    Data sourced from the agency's DesignRush profile

    TechVerdi Reviews & Testimonials

    • Dexter Moser
      Dexter Moser Review from Google
      5.0

      Dexter Moser's Review Sourced from Google

      I had a great experience working with TechVerdi for my website development. The team was responsive, professional, and easy to work with. They delivered exactly what I needed and the site runs smoothly. Really happy with the outcome and would recommend them to others looking for reliable web development help.

    • Olivia S
      Olivia S Review from Google
      5.0

      Olivia S's Review Sourced from Google

      I recently had the pleasure of working with TechVerdi on an AI automation bot project, and it was a fantastic experience. The team was very professional and easy to communicate with, and they provided us with a solution that has greatly improved our workflow and saved us a lot of time.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Delivering Quality Products and Premium Services

    Prismetric is a leading technology partner delivering future-ready AI-driven software solutions tailored to modern business needs...

    Top Services:

    • AI Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • IoT
    • Show more
    Location
    Jersey City, New Jersey
    Number of Employees
    100 - 249
    Average Hourly Rate
    $18/hr
    Portfolios Count
    21 Projects Listed

    Prismetric Services

    • AI Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • IoT
    • Blockchain
    • Big Data Analytics
    • Software Development
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Flyfood
    • DropDND
    • Yeeb
    Data sourced from the agency's DesignRush profile

    Prismetric Reviews & Testimonials

    • Hiren Chauhan
      Hiren Chauhan Director at Undisclosed
      4.0

      ERP Consulting Review from Hiren Chauhan

      Good service.

    • Mike Roger
      Mike Roger Founder at Entrepreneur
      5.0

      Mobile App Development Review from Mike Roger

      This is our second project with Prismetric. Almost done :) These guys are really smart. In addition development engineering they do extra advice which helps us to get advantage over our competitors. We are glad to receive professional services from the Prismetric team. Thank you so much for all supports. We recommend them to anyone looking for mobile app development services.

    • Robert Owusu
      Robert Owusu Review from Google
      5.0

      Robert Owusu's Review Sourced from Google

      I have been working with Prismetric Pvt in delivering our high-tech solutions pilot, small, large, integrating and specific targeted research projects. Prismetric is a leading-edge software house with unbelievable expertise in semantic technologies for content and knowledge management in networked embedded environments. We have no hesitation whatsoever in recommending Prismetric to anyone who needs their services and we look forward in working with them in our new project to start soon.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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