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Top IT Services Companies in the USA

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

IT services is the broadest label in this directory and covers, at different firms, entirely different work: managed infrastructure and helpdesk, project-based software delivery, cloud migration, security, procurement, or some combination sold as one relationship. Two providers under this heading may have almost nothing in common.

Because the label is wide, the useful filter is the engagement model rather than the capability list. Is this a retained relationship with a service-level agreement and a monthly cost, or project work quoted per piece? Who is accountable when something breaks at two in the morning, and what does the contract actually promise? A provider that answers those precisely is describing a real service; one that answers in capabilities is describing a brochure.

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Between them, the 600 best-ranked of these 871 IT service providers cover web development (463), web design (434), eCommerce (355) and iOS app (310). They also list work in United Kingdom. 594 of them have written a profile you can read before you get in touch.

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Bloxx
Web Development · Web Design · iOS App
At Akamai, our mission is to make digital experiences fast, intelligent and secure. Our intelligent edge platform surrounds everything, from the enterprise to the cloud.
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Okta, Inc.
Web Development · Web Design · UI/UX Design
Okta is the leading independent provider of identity for the enterprise.
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LeaseAccelerator
Web Development · Web Design · iOS App
LeaseAccelerator is a Software-as-a-Service provider in the fast-growing Enterprise Lease Accounting software sector.
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Wall Street Systems
Web Development · Web Design · iOS App
The ION Treasury portfolio is an award-winning, comprehensive set of products for treasury and risk management, supporting companies of any size, complexity, geographic reach,…
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Splunk, Inc.
iOS App · UI/UX Design · Software Development
Splunk is the world’s first Data-to-Everything Platform. Now organizations no longer need to worry about where their data is coming from, and they are free to focus on the business…
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DataArt, Inc.
Mobile App Development · Web Development · iOS App
DataArt is a global technology consultancy that designs, develops and supports unique software solutions, helping clients take their businesses forward.
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CompTIA
Web Development · Web Design · WordPress
The Computing Technology Industry Association (CompTIA) is the voice of the world's information technology (IT) industry.
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ThousandEyes
Web Development · Web Design · iOS App
ThousandEyes delivers visibility into digital experiences delivered over the Internet.
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Skedulo
Web Development · Web Design · iOS App
Skedulo is the platform for intelligent mobile workforce management. We help organizations manage their mobile workforces to delight their customers and engage their employees.
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GrandCentrix GmbH
Web Development · E-Commerce Development · eCommerce
Grandcentrix offers quality-leading Digital Product Engineering Services for Smart Products, Internet of Things, Industry 4.0, Smart Home and Smart Energy.
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Cognizant
Web Development · Web Design · UI/UX Design
Cognizant (Nasdaq-100: CTSH) is one of the world's leading professional services companies, transforming clients' business, operating and technology models for the digital era.
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GTT
Web Development · Web Design · UI/UX Design
GTT connects people across organizations, around the world and to every application in the cloud.
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Progress
iOS App · UI/UX Design · Software Development
Businesses face new challenges from internet-connected devices that offer new forms of interaction and communication to artificial intelligence, big data, and serverless computing.
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Smaato, Inc.
iOS App · UI/UX Design · Software Development
We connect advertisers to app publishers around the world. Whether you are trying to create the perfect advertising campaign or optimize your app’s revenues, we will help you reach…
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Bazaarvoice
Web Development · Web Design
Bazaarvoice connects brands and retailers to consumers so that every shopping experience feels personal.
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Mass Relevance
Web Development · Web Design · UI/UX Design
Khoros, formerly Spredfast + Lithium, is the leading customer engagement platform built to turn siloed knowledge into enterprise value, and customers into contributors.
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Mirum Agency
Web Development · Web Design · WordPress
Mirum is a borderless agency of over 2,500 digital savants, storytellers, makers and relentlessly curious minds who are united by an uncommon drive to make what’s next.
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NEORIS
Web Development · Web Design · UI/UX Design
What does the future look like for you? NEORIS is a global innovation consulting company, designing digitally-enabled strategies for a smarter future of easier interactions.
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Sophos
Web Development · Web Design · iOS App
Cybersecurity Evolved. As a worldwide leader in next-generation cybersecurity, Sophos protects nearly 400,000 organizations of all sizes in more than 150 countries from today’s…
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Proofpoint
Web Development · Web Design · iOS App
We provide the most effective cybersecurity and compliance solutions to protect people on every channel including email, the web, the cloud, and social media.
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Hitachi Data Systems
Web Development · Web Design · iOS App
Hitachi Vantara, a wholly-owned subsidiary of Hitachi, Ltd., helps data-driven leaders use the value in their data to innovate intelligently and reach outcomes that matter for…
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Aspect Software
Web Development · Web Design · iOS App
Our enterprise software is used by millions of agents every year and supports billions of consumer interactions around the world.
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CALIENT Technologies Inc.
Web Development · Web Design · iOS App
CALIENT Technologies is the global leader in pure photonic Optical Circuit Switching with systems that enable dynamic optical layer optimization in next-generation data centers and…
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Merrill Corporation
Web Development · iOS App · UI/UX Design
Merrill Corporation is a leading global SaaS provider for participants in the M&A lifecycle.
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Top IT Services Companies in the USA

Bloxx

Okta, Inc.

LeaseAccelerator

Wall Street Systems

Splunk, Inc.

DataArt, Inc.

CompTIA

ThousandEyes

Skedulo

GrandCentrix GmbH

Cognizant

GTT

Progress

Smaato, Inc.

Bazaarvoice

Mass Relevance

Mirum Agency

NEORIS

Sophos

Proofpoint

Hitachi Data Systems

Aspect Software

CALIENT Technologies Inc.

Merrill Corporation

Want to see your company here?

Get vetted

Sponsor the IT Services ranking

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