Companies · category

Top IT Service Providers for .NET in the USA

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

Between them, the 600 best-ranked of these 713 IT service providers cover web development (568), android (472), iOS app (463) and PHP (457). They also list work in New York, India and United Kingdom. 600 of them have written a profile you can read before you get in touch.

We list more than 700 IT service providers in the USA listed for .NET development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: SingleMind, INAP and UST Global.

Before you shortlist, check

Work on current .NET versions, not only legacy .NET Framework
A plan for moving any old .NET Framework code forward
Automated tests and deployment you can run yourself
That you own the code and the build pipeline

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Harte Hanks
Web Development · UI/UX Design · Web Design
Harte Hanks is a global marketing firm that specializes in helping brands win attention, build trust and earn loyalty in an ever-changing world.
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UsableNet
Web Development · UI/UX Design · Web Design
Founded in 2000, Usablenet started as a pioneer in web accessibility, evolving over time to become a leader in mobile and multichannel strategy and execution.
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SYKES
Web Development · Web Design · IT Services
Sykes Enterprises, Incorporated is a leading provider of multichannel demand generation and customer engagement services for Global 2000 companies and their end customers.
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Caresoft Global
Web Development · iOS App · UI/UX Design
We are a global engineering solutions company working closely with major Automotive, On-Highway, Agriculture & Construction Equipment Manufacturers and Tier-I Suppliers to solve…
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Citrix
Mobile App Development · iOS App · UI/UX Design
Citrix is a digital workspace platform that gives employees everything they need to be productive in one unified experience while arming IT with the visibility, simplicity, and…
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Gartner, Inc.
iOS App · UI/UX Design · E-Commerce Development
Gartner, Inc. (NYSE: IT), is the world’s leading research and advisory company and a member of the S&P 500.
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Nuance Communications, Inc.
Mobile App Development · iOS App · UI/UX Design
We build technology that frees users to be their best selves and enables businesses to do their best work. In doing so, we continually bring out the best in each other.
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Mentor Graphics
Web Development · iOS App · UI/UX Design
Mentor Graphics® is a technology leader in electronic design automation (EDA), providing software and hardware design solutions that enable companies to develop better electronic…
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SoftServe
iOS App · UI/UX Design · E-Commerce Development
SoftServe is a digital authority that advises and provides at the cutting-edge of technology.
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Pythian
Web Development · iOS App · UI/UX Design
Pythian excels at helping businesses use their data and cloud to transform how they compete and win in this ever-changing environment by delivering advanced on-prem, hybrid, cloud…
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LTI - Larsen & Toubro Infotech
Web Development · iOS App · UI/UX Design
LTI (NSE: LTI) is a global technology consulting and digital solutions Company helping more than 300 clients succeed in a converging world.
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Expedia Group
Web Development · UI/UX Design · Web Design
Expedia Group (NASDAQ: EXPE) is the world's travel platform, with the power to bring the world within reach for millions of people.
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Jumio Corporation
Web Development · iOS App · UI/UX Design
When identity matters, trust Jumio. Jumio’s mission is to make the internet a safer place by protecting the ecosystems of businesses through cutting-edge online identity…
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DDN Storage
Search Engine Optimization · Social Media Marketing · Web Development
DataDirect Networks (DDN) is the world’s leading big data storage supplier to data-intensive, global organizations.
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Bloxx
Web Development · iOS App · UI/UX Design
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 · UI/UX Design · Web Design
Okta is the leading independent provider of identity for the enterprise.
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Splunk, Inc.
iOS App · UI/UX Design · E-Commerce 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 · IT Services
The Computing Technology Industry Association (CompTIA) is the voice of the world's information technology (IT) industry.
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ThousandEyes
Web Development · iOS App · UI/UX Design
ThousandEyes delivers visibility into digital experiences delivered over the Internet.
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GrandCentrix GmbH
Web Development · E-Commerce Development · IT Services
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 · UI/UX Design · Web 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 · UI/UX Design · Web 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 · E-Commerce 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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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: India (465) · UK (457) · Germany (222) · Canada (143).

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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Every other way we rank it service providers — by what they do and where they are.

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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 .NET in the USA

Harte Hanks

UsableNet

SYKES

Caresoft Global

Citrix

Gartner, Inc.

Nuance Communications, Inc.

Mentor Graphics

SoftServe

Pythian

LTI - Larsen & Toubro Infotech

Expedia Group

Jumio Corporation

DDN Storage

Bloxx

Okta, Inc.

Splunk, Inc.

DataArt, Inc.

CompTIA

ThousandEyes

GrandCentrix GmbH

Cognizant

GTT

Progress