Companies · category

Top IT Service Providers for JavaScript in the USA

762 IT service providers ranked by rating, review volume and listing quality.

JavaScript spans more ground than any other language on this list. It runs in every browser, on servers through Node, and inside mobile and desktop applications, so a firm listing it may be doing front-end interface work, back-end services, or both.

The useful clarification is which part of the stack, and with what. Front-end work is dominated by a handful of frameworks and the choice affects hiring for years afterwards. Back-end JavaScript competes with other server languages and is chosen for good reasons and bad ones. Ask why they would pick it for your project specifically — a clear answer indicates a team choosing tools, and a vague one indicates a team using whatever they already know.

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Between them, the 600 best-ranked of these 762 IT service providers cover web development (578), iOS app (402), android (387) and mobile app development (381). They also list work in Washington, New York, California and Oregon. 598 of them have written a profile you can read before you get in touch.

We list more than 750 IT service providers in the USA listed for JavaScript development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Untold Studio, Tecziq Solutions and Snaps Technology.

Before you shortlist, check

Which frameworks they use, and why for your project
Automated tests and code review as standard
Performance and accessibility targets agreed up front
How dependencies are kept up to date after launch

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Inverse-Square
Mobile App Development · Web Development · iOS App
We help businesses with unique or complex processes to solve workflow problems with custom software.
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INSPIRIT IoT, Inc
Mobile App Development · Web Development · iOS App
Inspirit compresses, accelerates and deploys your machine learning to your target platform.
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Securolytics
Mobile App Development · Web Development · iOS App
Securolytics has created the 1st Holistic Security Platform Designed for Healthcare that Prevents Security Breaches and Manages Compliance Across The Internet of Things (IoT) We…
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HealthSaaS
Mobile App Development · Web Development · iOS App
The HealthSaaS Vision is to inspire optimism and hope for chronic condition patients and the clinicians who serve them.
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VeriSolutions
Mobile App Development · Web Development · iOS App
We’re an IoT startup company headquartered in the Advanced Technology Development Center (ATDC) of Atlanta, Georgia that is focused on the cold chain monitoring market.
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Xfive
Mobile App Development · Custom Software Development · Web Development
Xfive is a solution for design and web agencies looking to expand their capacity for front-end, PHP and Ruby on Rails or WordPress development where care is the foundation of…
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Spire Digital
Mobile App Development · Search Engine Optimization · Web Development
Spire Digital is a Denver-based digital product development firm that transforms business through design and technology.
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Dominate SmartSite
Mobile App Development · Web Development · iOS App
Dominate SmartSite is the leading global provider of Industrial Internet of Things (IIoT) enterprise solutions for the construction and manufacturing industries.
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Checkmate.Digital
Mobile App Development · Web Development · iOS App
The Design Sprint is a 4-day process for rapidly solving big challenges, creating new products, or improving existing ones. It compresses potential months of work into one week.
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TelPlus Communications, Inc
Mobile App Development · Web Development · iOS App
TelPlus CommunicationsTelPlus Communications, Inc. was founded in 1997 to provide customers with consistently high quality, timely services for your IT requirements.
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Elevat
Mobile App Development · Web Development · iOS App
Elevāt, A Seattle-based Industrial IoT company focused on connecting the Industrial World.
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Palindrome
Mobile App Development · Web Development · iOS App
Palindrome is a leading Information Security Research, Applications, and Assurance services, provider.
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Glassboard | Product Development for Hardware
Mobile App Development · Web Development · iOS App
Use the Glassboard team to implement a technology-based solution and stay focused on what creates value for your company.
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LocusView
Mobile App Development · Web Development · iOS App
LocusView is a fast-growing startup developing and deploying next-generation software for built infrastructure industries including utilities and pipelines.
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Vertical Trail
Mobile App Development · Web Development · iOS App
Vertical Trail provides modern data-driven solutions built to run in the cloud.
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AiCare
Mobile App Development · Web Development · iOS App
Advancing Senior Care Through the Integration of Artificial Intelligence and Community.
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Darceo Inc.
Mobile App Development · Web Development · iOS App
Darceo is a global provider of engineering services for the development of products in the Industrial, Mil/Aero, and Medical markets.
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KaJ Labs
Mobile App Development · Web Development · iOS App
KaJ Labs provides mobile app development for iOS, Android and Web.
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Phosphorus Cybersecurity Inc.
Mobile App Development · Web Development · iOS App
Phosphorus is Security for the #IoT with the only AGENTLESS technology. We provide secure software updates and alerts for devices in the home and office.
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Bluesalve Partners
Mobile App Development · Web Development · iOS App
Accelerating change, growth, and success. CE/ IoT Partners and BlueSalve are now blue salve partners.
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Blueforce Development Corp.
Mobile App Development · Web Development · iOS App
Blueforce Development Corporation is a packaged software company, headquartered and incorporated in Massachusetts, which has built a patent-pending software application and fusion…
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Knex Inc.
Mobile App Development · Web Development · iOS App · Also in India
KNEX was established as a consulting company in the United States of America.
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Qruize Technologies Pvt. Ltd.
Mobile App Development · Web Development · iOS App · Also in Chennai
An innovative AI-driven automation solution provider, empowering global businesses with high-end automation consulting Services and solutions.
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The Ricker Lyman Robotic Company Inc.
Mobile App Development · Web Development · iOS App
The Ricker Lyman Robotic Company provides global companies with expertise in cutting-edge technology such as big data, streaming microservices, blockchain, the Internet of things,…
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How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the USA are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: UK (478) · India (392) · Germany (214) · Ukraine (145).

Other specialisms in the USA: e-commerce (1,539) · Android app development (1,530) · iOS app development (1,452) · UI/UX design (1,355) · PHP development (946).

Every IT service provider in the USA: the full list.

Every category in the USA: the USA country page.

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More on TrustList

Everything here links back to the same verified catalogue. Pick your next stop.

Top IT Service Providers for JavaScript in the USA

Inverse-Square

INSPIRIT IoT, Inc

Securolytics

HealthSaaS

VeriSolutions

Xfive

Spire Digital

Dominate SmartSite

Checkmate.Digital

TelPlus Communications, Inc

Elevat

Palindrome

Glassboard | Product Development for Hardware

LocusView

Vertical Trail

AiCare

Darceo Inc.

KaJ Labs

Phosphorus Cybersecurity Inc.

Bluesalve Partners

Blueforce Development Corp.

Knex Inc.

Qruize Technologies Pvt. Ltd.

The Ricker Lyman Robotic Company Inc.