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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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  1. F

    Flow

    Web Development · Web Design · eCommerce

    Flow makes international e-commerce as simple as domestic. Flow provides a turn-key platform for e-commerce companies to go global, capturing international demand for their…

    Write a review
  2. NI

    NGINX, Inc.

    Web Development · Web Design · iOS App

    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.

    Write a review
  3. D

    DTN

    Web Development · Web Design · iOS App

    DTN delivers accurate, objective, real-time, and actionable insights to increase our customers’ confidence and support their business decisions.

    Write a review
  4. S

    Stripe

    Web Development · Web Design · Digital Payments

    Stripe is the best software platform for running an internet business. We handle billions of dollars every year for forward-thinking businesses around the world.

    Write a review
  5. S

    SimScale

    UI/UX Design · Software Development · E-Commerce Development

    SimScale is the world’s first production-ready SaaS application for engineering simulation.

    Write a review
  6. S

    Smartling

    Social Media Marketing · Web Development · Web Design

    If commerce is driven by words, global commerce is fueled by translation. Left to right, right to left. Buttons, shopping carts, and romance copy. Websites, emails, and forms.

    Write a review
  7. M

    Majesco

    Web Development · Web Design · IT Solution

    Majesco is a leading insurance solutions and services provider.

    Write a review
  8. MR

    Mi9 Retail

    Web Development · Web Design · iOS App

    Mi9 Retail is the fastest growing provider of enterprise software for retailers, wholesalers, and brands.

    Write a review
  9. A

    Accord

    Web Development · Web Design · iOS App

    Accord is an early-stage, YCombinator startup (YC 2020) founded by early Stripe, Adobe, and Google Cloud leaders.

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  10. W

    WalletHub

    Web Development · Web Design · iOS App

    WalletHub helps all consumers reach top financial fitness by providing: • Free credit scores and credit reports are updated on a daily basis.

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  11. NN

    Nexmo (now Vonage)

    E-Commerce Development · IT Solution · eCommerce

    Vonage is redefining business communications once again. We're making communications more flexible, intelligent, and personal, to help enterprises the world over, stay ahead.

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  12. V

    VMRay

    E-Commerce Development · Network Security · Cybersecurity

    VMRay is focused on a single mission: to help enterprises protect themselves against the growing global malware threat.

    Write a review
  13. A

    Advantasure

    Web Development · Web Design · iOS App

    At Advantasure, we partner with healthcare clients to simplify their operations and accelerate their business success.

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  14. AW

    Arnold Worldwide

    Social Media Marketing · Web Development · Web Design

    Arnold is a Creation Company. We believe brands today need partners who think less like advertisers and more like creators. Creators who are well informed.

    Write a review
  15. ZS

    ZPE Systems

    E-Commerce Development · Data Center · eCommerce

    ZPE Systems is the industry’s first provider of an “Open Infrastructure Management Solution™” for in-band and out-of-band access and control of Network, Compute, Storage and Power…

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  16. I

    Infor

    Artificial Intelligence - AI · ERP Software Development · UI/UX Design

    Infor is a global company that provides enterprise software products for every aspect of the business.

    Write a review
  17. RT

    Rockers Technology

    Mobile App Development · Web Development · Web Design

    Rockers Technology is a leading software development company offering top-rated app development services to clients across the globe.

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  18. T

    Tagmarshal

    Web Development · Web Design · iOS App

    TO Optimize the pace, Profitability and Enjoyment of Golf by Using Data Having improved 10 million rounds of golf, adding data and research value to major associations and powered…

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  19. N

    Neo4j

    Artificial Intelligence - AI · Web Development · Web Design

    Neo4j is the leading graph database platform that drives innovation and competitive advantage at Airbus, Comcast, eBay, NASA, UBS, Walmart and more.

    Write a review
  20. NN

    Nozomi Networks

    E-Commerce Development · Network Security · Web Security

    Nozomi Networks is the leader of industrial cybersecurity, delivering the best solution for real-time visibility to manage cyber risk and improve resilience for industrial…

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  21. S

    Sopheon

    E-Commerce Development · IT Solution · eCommerce

    Sopheon partners with customers to provide complete Enterprise Innovation Management (EIM) solutions including software, expertise, and best practices.

    Write a review
  22. R

    RapidMiner

    Artificial Intelligence - AI · E-Commerce Development · Data Analytics

    RapidMiner is reinventing enterprise AI so that anyone has the power to positively shape the future.

    Write a review
  23. CI

    Cobalt.io

    E-Commerce Development · IT Solution · Web Security

    Cobalt’s Pentest as a Service (PtaaS) Platform transforms traditional pentesting into a data-driven vulnerability management engine.

    Write a review
  24. FI

    FireEye, Inc.

    Web Development · Web Design · IT Solution

    Every day at FireEye, we see firsthand the impact of cyber-attacks on real people.

    Write a review

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