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

Filter by fitbudget, engagement, size and more

Transcenda
Mobile App Development · Web Development · iOS App
At Transenda, we believe that every idea deserves to be lifted to success and that every organization needs to embark on a journey of renewal through digital change in order to…
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MWDN Ltd.
Mobile App Development · Web Development · iOS App
Our mission at MWDN is to translate your ideas into seamless and efficient software products by employing advanced technologies and cost-effective approaches.
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Sapiens
Web Development · Web Design · UI/UX Design
Sapiens International Corporation empowers insurers to succeed in an evolving industry.
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Integrant, Inc.
Web Development · Web Design · React Native
Integrant, Inc. is a custom software development company focused on providing tailor-made software solutions to fit your needs to a tee.
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Newfire Partners
Web Development · UI/UX Design · IT Services
Newfire is a partner in software development and company building. We empower your teams to launch products so your most innovative ideas can take flight.
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DD
Domino Data Lab
Web Development · iOS App · Web Design
We’re building the platform that enables thousands of data scientists to develop better medicines, grow more productive crops, build better cars, or simply recommend the best song…
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G
GeekForce
Web Development · iOS App · UI/UX Design
Welcome to GeekForce's LinkedIn profile. GeekForce is a software development company.
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OC
Over-C
Web Development · iOS App · Web Design
Over-C is a digital transformation solution that uses big data and analytics to deliver detailed insights into business operations.
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NR
New Relic, Inc.
Web Development · iOS App · Web Design
New Relic is the industry’s largest and most comprehensive cloud-based observability platform built to help customers create more perfect software.
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AC
Appian Corporation
Mobile App Development · Web Development · iOS App
Before Appian was a company, it was an idea. Not about a product or a market, but about the culture needed to sustain innovation and value.
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R
Revature
Web Development · Web Design · UI/UX Design
Revature is a technology talent development company providing a turn-key talent acquisition solution for corporate and government partners and no-cost coding immersion programs for…
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IT
Innov8 Technology
Web Development · Web Design · UI/UX Design
On the 23rd of January 1997, the founding directors registered Innov8 Technology Ltd with Companies House and our business was born.
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27
[24]7.ai
Custom Software Development · Web Development · iOS App
\[24\]7.ai is redefining the way companies interact with consumers.
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E
Estateably
Mobile App Development · Web Development · iOS App
Estateably is an estate settlement platform that allows financial professionals to dramatically expedite the estate settlement process through the digitization of paper-based…
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SM
SolarWinds MSP
Web Development · iOS App · Web Design
SolarWinds® MSP delivers comprehensive, scalable IT service management solutions to empower MSPs of every size and scale worldwide to create highly efficient and profitable…
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S
Snowflake
Web Development · iOS App · Web Design
Snowflake’s cloud data platform shatters the barriers that have prevented organizations of all sizes from unleashing the true value from their data.
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P
Panzura
Web Development · iOS App · Web Design
Panzura is the leader in multi-cloud data management, a $68B market opportunity. Its portfolio includes Panzura Freedom NAS and Vizion.ai.
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A
ArangoDB
Mobile App Development · Web Development · iOS App
A distributed free and open-source database with a flexible data model for documents, graphs, and key-values.
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T
TeleSign
Web Development · Web Design · IT Services
TeleSign connects and protects online experiences with sophisticated customer identity and engagement solutions.
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S
SpringAhead
Web Development · iOS App · Web Design
SpringAhead is an online time tracking, billing and expense reporting solution that is fast, easy and fully integrated with your accounting system.
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I
Invoca
Social Media Marketing · Web Development · Web Design
Invoca is an AI-powered call tracking and conversational analytics company that brings the depth of marketing analytics traditionally limited to digital consumer interactions to…
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NI
NGINX, Inc.
Web Development · iOS App · Web Design
NGINX, now part of F5, is the company behind the popular open-source project. We offer a suite of technologies for developing and delivering modern applications.
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D
DTN
Web Development · iOS App · Web Design
DTN delivers accurate, objective, real-time, and actionable insights to increase our customers’ confidence and support their business decisions.
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H
Hoylu
iOS App · Web Design · UI/UX Design
The idea for Hoylu started as a research work at the University of Applied Sciences in Austria.
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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

Transcenda

MWDN Ltd.

Sapiens

Integrant, Inc.

Newfire Partners

Domino Data Lab

GeekForce

Over-C

New Relic, Inc.

Appian Corporation

Revature

Innov8 Technology

[24]7.ai

Estateably

SolarWinds MSP

Snowflake

Panzura

ArangoDB

TeleSign

SpringAhead

Invoca

NGINX, Inc.

DTN

Hoylu