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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

Filter by fitbudget, engagement, size and more

FISCAL Technologies
Web Development · iOS App · UI/UX Design
FISCAL Technology is a leading provider of forensic solutions that empower procure-to-pay (P2P) teams across the globe to protect organizational spending.
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SA Technologies Inc.
Custom Software Development · iOS App · React Native
SA Technologies is a renowned IT consulting service provider company in Santa Clara, California.
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Calibraint Technologies
Mobile App Development · Web Development · iOS App
Calibraint a next-generation technology service company that delivers knee-jerk solutions and services with a customer-centric approach.
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Happay - Expense Management Solution for Businesses
Custom Software Development · ERP Software Development · iOS App
Happay is the most widely used and implemented solution in the Indian T&E software space.
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ThirdEye Data Inc.
Web Development · iOS App · UI/UX Design
ThirdEye delivers real-world Artificial Intelligence solutions built on Big Data platforms for scalability and reliability.
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Infovity
ERP Software Development · Web Development · Software Development
Oracle applications and technologies consulting company, Infinity, was started with a straightforward objective: provide Oracle solutions that are scalable, auditable and reliable…
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Groupon, Inc.
Web Development · iOS App · UI/UX Design
Groupon (NASDAQ: GRPN) is building the daily habit in local commerce, offering a vast mobile and online marketplace where people discover and save on amazing things to do, see, eat…
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DropThought
Mobile App Development · Web Development · iOS App
We believe that feedback is the single most important aspect of growth.
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RiskSense, Inc.
Mobile App Development · Web Development · iOS App
RiskSense®, Inc. provides vulnerability prioritization and management to dynamically control and measure cybersecurity risk.
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Optymyze
Web Development · iOS App · UI/UX Design
Optymyze transforms sales operations into a strategic competitive advantage—from improving individual business processes to building centers of excellence for sales operations…
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Syniverse Technologies LLC
Mobile App Development · iOS App · UI/UX Design
Syniverse is the world’s most connected company. Its focus is on bridging technology islands and commercial worlds so its customers can reach, protect, and engage their users –…
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MicroStrategy
Web Development · UI/UX Design · Web Design
MicroStrategy (Nasdaq: MSTR) is a worldwide leader in enterprise analytics and mobility software.
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ExtraHop
Web Development · UI/UX Design · Web Design · Also in United Kingdom
ExtraHop delivers enterprise cyber analytics that allows you to quickly investigate threats, ensure the delivery of critical applications, and secure your investment in the cloud.
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SITA
Web Development · iOS App · UI/UX Design
We deliver and manage sophisticated business solutions for air transport, global distribution systems and government customers over the world’s most extensive network.
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RingCentral
Web Development · iOS App · UI/UX Design
RingCentral, Inc. (NYSE: RNG) is a global provider of cloud enterprise unified communications and collaboration solutions.
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RateGain
Web Development · UI/UX Design · Web Design
As an innovative, cloud-based technology platform, RateGain helps hospitality and travel companies make more revenue every day.
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IT Convergence
Web Development · iOS App · UI/UX Design
IT Convergence is a global Oracle Platinum Partner with a comprehensive service offering across all three pillars of the Cloud (IaaS, PaaS, SaaS), including Consulting/Advisory,…
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Forsys Inc.
Custom Software Development · ERP Software Development · Web Development
Forsys is a global technology firm providing a wide spectrum of enterprise, cloud and analytics services.
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insightsoftware
Web Development · iOS App · UI/UX Design
insightsoftware is on a mission to help companies turn their financial & operational data into better business outcomes that drive growth and ROI.
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Vonage
Web Development · Web Design · IT Services
Vonage (NYSE: VG) is redefining business communications once again.
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Park Place Technologies
Web Development · iOS App · UI/UX Design
Park Place Technologies' maintenance and support set the standard for how the world’s largest data centers drive performance and value from critical IT infrastructures, including…
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Tescomus
Web Development · Web Design · IT Services
Tescom is a software testing firm. Software testing and quality assurance is all we do, it’s all we’ve ever done, and we’ve been doing it for the Atlanta community since 1999.
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ANSYS, Inc.
iOS App · UI/UX Design · Web Design
Founded in 1970, ANSYS employs more than 2,900 professionals, and many of them are engineers expert in fields such as finite element analysis, computational fluid dynamics,…
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Bitpod.io
Mobile App Development · Web Development · iOS App
Among the multitude of organizations making efforts towards revolutionizing the way the world perceives technology, Bitpod emerges as a beacon of out-of-the-box thinking.
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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

FISCAL Technologies

SA Technologies Inc.

Calibraint Technologies

Happay - Expense Management Solution for Businesses

ThirdEye Data Inc.

Infovity

Groupon, Inc.

DropThought

RiskSense, Inc.

Optymyze

Syniverse Technologies LLC

MicroStrategy

ExtraHop

SITA

RingCentral

RateGain

IT Convergence

Forsys Inc.

insightsoftware

Vonage

Park Place Technologies

Tescomus

ANSYS, Inc.

Bitpod.io