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Top Software Development Companies in the USA

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

Software development here means building software to order — a product, an internal system, or a replacement for something that has outgrown a spreadsheet. It spans firms that take a specification and deliver against it, and teams that work discovery-first and expect the specification to change.

The distinction worth establishing early is who owns the decisions. A supplier that builds exactly what was asked will deliver exactly what was asked, including the parts that were wrong. A partner that pushes back costs more in meetings and less in rework. Neither is better in the abstract; they suit different buyers and different projects, and the mismatch is where these engagements go wrong.

Want your company here?

Between them, the 600 best-ranked of these 801 IT service providers cover web development (448), web design (377), mobile app development (270) and android (262). 577 of them have written a profile you can read before you get in touch.

TrustList ranks more than 800 software development companies in the USA, ordered on client reviews and profile quality, never on payment. At the top right now: Blue Water, Bixlabs and Neuralab Inc..

What to check before you shortlist a software development company

  • A discovery or specification phase before a fixed estimate
  • Who is on the team, and whether they stay for the whole project
  • That you own the intellectual property and the source code
  • Testing, documentation and maintenance after release
Filter by fitbudget, engagement, size and more

Only businesses that have told TrustList match a filter. Filters never change the order or a score.

  1. BuildThis logo

    BuildThis

    Custom Software Development · Web Development · Web Design

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  2. Flexaspect LLC logo

    Flexaspect LLC

    Mobile App Development · Custom Software Development · Search Engine Optimization

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  3. Fireart logo

    Fireart

    Web Development · Web Design · UI/UX Design

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  4. Heap Inc. logo

    Heap Inc.

    Custom Software Development · Web Development · Web Design

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  5. Yelling Mule logo

    Yelling Mule

    Mobile App Development · Social Media Marketing · Web Development

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  6. SS

    Strategic Systems International

    UI/UX Design · E-Commerce Development · iOS App

    Strategic Systems International (SSI) is a Chicago-headquartered Advanced Analytics and Software Engineering firm that builds data-driven applications for Tech Companies and…

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  7. RC

    Royal Cyber Inc.

    Artificial Intelligence - AI · E-Commerce Development · iOS App

    Royal Cyber Inc. is an IT Consulting & Digital Transformation Company, specializing in Services, Solutions, and Software.

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  8. P

    PROMATIS

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

    PROMATIS provides consulting for corporate strategies and business management and combines it with IT concepts and implementation-oriented project management.

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  9. GL

    Grafana Labs

    Social Media Marketing · Web Development · Web Design

    Grafana Labs is the company behind Grafana, the leading open-source software for visualizing time series data.

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  10. ST

    Starship Technologies

    Artificial Intelligence - AI · E-Commerce Development · Robotics

    With a combination of mobile technology, autonomous robots and partnerships with stores and restaurants, we make local delivery faster, smarter and more cost-efficient.

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  11. DN

    Diebold Nixdorf

    Artificial Intelligence - AI · Web Development · Web Design

    Consumer behavior is changing rapidly; people are empowered, connected and expect an unprecedented level of service and convenience.

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  12. S

    SimScale

    UI/UX Design · E-Commerce Development · IT Services

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

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  13. P

    Pingdom

    Web Development · Frontend · Backend

    SolarWinds Pingdom provides real user, uptime, page speed, and synthetic monitoring of web applications from outside the firewall.

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  14. N

    Nerdery

    Mobile App Development · Search Engine Optimization · Web Development

    Nerdery is a digital business consultancy working at the leading edge of strategy, design and technology to help clients evolve and thrive.

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  15. N

    NinjaRMM

    E-Commerce Development · IT Solution · eCommerce

    NinjaRMM was designed with one purpose: to simplify the complex workday of MSPs and IT professionals.

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  16. H

    Hoylu

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

    The idea for Hoylu started as a research work at the University of Applied Sciences in Austria.

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  17. 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.

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  18. C

    Canto

    UI/UX Design · E-Commerce Development · iOS App

    When Canto was founded 25 years ago, we couldn’t have imagined how far the industry would come.

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  19. S

    SURFnet

    Web Development · Web Design · IT Services

    Surfnet Communications is a broadband Internet Service provider (ISP) serving California's Central Coast communities.

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  20. CA

    C3.ai, Inc.

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

    C3.ai is a leading enterprise AI software provider for accelerating digital transformation.

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  21. RT

    Rasa Technologies Inc.

    Artificial Intelligence - AI · IT Services · Machine Learning

    At Rasa, we're building the standard infrastructure for conversational AI.

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  22. KD

    Kenmore Design LLC

    Web Development · Web Design · UI/UX Design

    Kenmore Design is a recognized name in web design and development for Forex brokers and other IT-driven businesses.

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  23. Z

    Zerto

    E-Commerce Development · IT Services · IT Solution

    A world of uninterrupted technology is a world where organizations across all industries can thrive without downtime or disruptions for their customers.

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  24. TF

    True Fit Corporation

    E-Commerce Development · IT Services · Big Data

    True Fit is a data-driven personalization platform for footwear and apparel retailers that uses rich connected data and machine learning to enable personal experiences for fashion…

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For vendors

Want to see your company here?

The order is earned: ratings, verified reviews and listing quality decide it, and nobody can pay to move up. There are two ways to stand out, and each one says what it is.

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  • Marked Sponsored, and it never changes the order
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How many software development companies are there in the USA?

801 companies on TrustList offer software development and are based in the USA. That makes the USA the largest software development market we rank.

How is this ranking worked out?

Each firm's position comes from its client reviews and its profile, blended into one score:

  • Rating, smoothed so a single five-star review cannot outrank a firm with hundreds of good ones
  • Review volume, with diminishing returns
  • Profile completeness: the details a buyer needs to judge the firm
  • Earned trust: verification and awards, as a small lift

No firm can pay for a position. Sponsored listings are labelled and shown apart from this list. How rankings work

What else do firms in the USA offer?

We also rank web development (2,396), web design (1,857) and mobile app development (1,308) in the USA.

Software Development in other countries

Other services in the USA

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