Our directory is designed to help you find the right software testing company in the USA, based on five ranking criteria, expert review, and 1,300 verified client reviews.
Discover the Best Software Testing Companies in the US
14 Companies-Rankings updated: September 07, 2026
DesignRush evaluates software testing agencies for QA expertise, testing processes, and verified client reviews to support confident decision-making. Some placements may be paid partnerships.
Your business faces unique challenges. Let's work together to create a custom mobile app or web solution to meet those challenges head-on...
Top Services:
Mobile App Development
Software Development
Staff Augmentation
IoT
AI Development
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Location
Nashua, New Hampshire
Number of Employees
250 - 499
Average Hourly Rate
$35/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Zco Corporation Services
Mobile App Development
Software Development
Staff Augmentation
IoT
AI Development
UI/UX Design
Web Development
Software Testing
VR/AR
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Volkswagen
Harvard University
BBC America
Verizon
Liberty Mutual
Microsoft
Samsung
Eversource
APR Energy
Dartmouth College
Data sourced from the agency's DesignRush profile
Zco Corporation Reviews & Testimonials
Mark Gratiot
Director of R&D at Streamline Automation
5.0★
Cross-Platform Review from Mark Gratiot
In addition to building out a native remote inspection app for iPads, Zco concurrently ported the software to a Xamarin platform for Windows users. Zco has released nine major iterations of the iPad app, each available in the App Store, as well as the initial version of the cross-platform Xamarin build. Their nimble team boasts a wide breadth of skills to match any given situation. Having clear documentation upfront has reduced onboarding time.
Katie Matter
Project Manager at Southwestern Advantage
5.0★
Mobile App Development Review from Katie Matter
Zco Corporation provided full-stack mobile app development to an educational resource retail organization. They worked in Unity to build a cross-platform resource for users to advance through various curricula. The app has successfully been moved into preproduction and the second phase of development, completely satisfying project stakeholders with the quality of both its designs and functionality. The Zco Corporation team is highly creative and collaborative throughout their work.
J. Michael Webb
CEO at CheckMySpot
5.0★
Startup Review from J. Michael Webb
J. Michael Webb from CheckMySpot chose Zco Corporation for app development due to its expertise. Zco adeptly developed a hybrid mobile teledermatology platform and an admin website, demonstrating excellent communication, responsiveness, and innovation. Despite the project's evolving and innovative nature, Zco seamlessly integrated Webb's intent and met all challenges, leaving him with no suggestions for improvement. (Verified via email/call)
Reviews verified by DesignRush and sourced from the agency's profile
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Singular is a specialized software development company that thrives on agile methodologies. We excel at leveraging Next Gen technologies, such as Flutter & FlutterFLow, to craft dynamic platforms that are remarkably adaptable, user-friendly, and high-performing...
Top Services:
Software Development
Web Design
eCommerce Development
Web Development
UI/UX Design
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Location
Miami, Florida
Number of Employees
50 - 99
Average Hourly Rate
$65/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
13 Projects Listed
Singular Services
Software Development
Web Design
eCommerce Development
Web Development
UI/UX Design
Mobile App Development
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Osmo
Forge
Disney
Burger King
Charli Charging
Data sourced from the agency's DesignRush profile
Singular Reviews & Testimonials
Brittany Kernohan
Founder at Chaîné
5.0★
eCommerce Development Review from Brittany Kernohan
I have been working with Singular for two years building a peer to peer e-commerce marketplace. The team is always very responsive and creative; I’ve appreciated their expertise and time.
Arthur Linares
CEO at Cannabolt
5.0★
Mobile App Development Review from Arthur Linares
Cannabolt provides bitcoin infrastructure for the cannabis industry. Singular Design has delivered high-quality outputs in a timely manner. They've demonstrated stellar project management and communicated effectively via virtual meetings. I'm thrilled with Singular Agency's team.
Undisclosed
Founder at RIMA Network
1.8★
Flutter Development Review from Undisclosed
The company has a salesman who overpromised, but once the project started, he was never found to address the underdeliver. Since the first brief, I made clear our products two main selling points. Two years after, I have had to learn some code to look under the hood and discover a half-baked and improvised "solution". Now, I ended up with an incomplete product that fails to deliver the two main functions I requested (and was promised). On top of that, there is a lack of order in terms of naming, cleanliness, and hierarchy. I cant recommend them.
Reviews verified by DesignRush and sourced from the agency's profile
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Langate is a software development services provider with a focus on digital transformation and serving clients in various industries, with a strong emphasis on healthcare software development...
Top Services:
Mobile App Development
Software Testing
Software Development
IT Services
Big Data Analytics
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Location
New York City, New York
Number of Employees
50 - 99
Average Hourly Rate
$45/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
10 Projects Listed
Langate Services
Mobile App Development
Software Testing
Software Development
IT Services
Big Data Analytics
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Software & IT Services Industry
Retail Industry
Corporate Services Industry
Data sourced from the agency's DesignRush profile
Langate Reviews & Testimonials
Valeriia Klymenko
CBDO at UniOne
5.0★
Software Development Review from Valeriia Klymenko
Working with Langate Software has been a game-changer for our business. Their expertise in API integration and email automation streamlined our communication processes, significantly improving the speed and reliability of our transactional emails. They tailored solutions to meet our unique needs and delivered exceptional results - reducing manual effort and increasing engagement with our subscribers. Langate's support has been outstanding, providing continuous maintenance and ensuring our systems run smoothly.
Anton Popov
Review from Google
5.0★
Anton Popov's Review Sourced from Google
A great place to work, where the work process is comfortable and clearly organized. A friendly atmosphere which supports you to grow in your expertise.
Reviews verified by DesignRush and sourced from the agency's profile
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We are a digital product, chatbot solution, and software development company and your guide on the digital transformation journey. Right from materializing your ideas through rapid application development, to improving processes via RPA and AI, to streamlining your customer support via chatbots, we do it all...
Top Services:
Software Development
Mobile App Development
AI Development
Software Testing
Big Data Analytics
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Location
Austin, Texas
Number of Employees
100 - 249
Average Hourly Rate
$40/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
9 Projects Listed
Maruti Techlabs Services
Software Development
Mobile App Development
AI Development
Software Testing
Big Data Analytics
Cloud Consulting
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Zydus Hospitals
Symphony Aircoolers
Kalpataru Group
Smart AI
Sterling Accuris Diagnostics
Piramal
Optimizely
Telefonica
Ubisoft
Granite
Data sourced from the agency's DesignRush profile
Maruti Techlabs Reviews & Testimonials
Undisclosed
CEO at Online Telehealth Company
5.0★
Software Development Review from Undisclosed
Maruti Techlabs has delivered quality work on time and excelled at planning. They’ve built an application and CRM from scratch using React and the client’s design work. The team stands out for their professionalism and seamless execution. They manage the project well, using weekly calls to track progress and communicating over phone calls and Slack. Overall, it’s easy to work with them.
Reviews verified by DesignRush and sourced from the agency's profile
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Luxe Quality is a QA and software testing company founded in 2016. Since its launch, Luxe Quality has grown into a strong community of 80+ professionals. Operating globally, the company has completed more than 200 projects in diverse markets, including the USA, Canada, Australia, Singapore, and many European...
Top Services:
Software Testing
Graphic Design
SEO
Location
McLean, Virginia
Number of Employees
100 - 249
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
3 Projects Listed
Luxe Quality Services
Software Testing
Graphic Design
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We are an Award-Winning app and software development agency based in Miami FL. We work with clients nation-wide to cut their IT expenditure, provide custom, tailor-made software solutions, and help scale their organization through progressive technology...
Top Services:
Mobile App Development
Web Development
Software Testing
UI/UX Design
Software Development
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Location
Miami, Florida
Number of Employees
100 - 249
Minimal Budget
$25,000 - $50,000
Alpha Bravo Development Services
Mobile App Development
Web Development
Software Testing
UI/UX Design
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Healthcare Industry
Retail Industry
Agriculture Industry
Data sourced from the agency's DesignRush profile
Alpha Bravo Development Reviews & Testimonials
Greg Baker
Owner at South Florida Golfing
5.0★
Web Development Review from Greg Baker
I have had the privilege of working with several service providers over the years, but I can confidently say that Alpha Bravo ranks among the best. Their dedication to client satisfaction, coupled with their unwavering commitment to delivering high-quality results, has made them a trusted partner.
In addition to their exceptional work ethic and professionalism, the team at Alpha Bravo has also demonstrated a remarkable ability to adapt and pivot when necessary.
Anonymous
Owner at Total Event Management Group
5.0★
Mobile App Development Review from Anonymous
Alpha Bravo Development successfully executed the app ahead of schedule. The project manager excelled at communication; they updated the client of all project developments. They went above and beyond to meet the client's expectations, so the client commends them for their dedication and support.
Cynthia Milano
Review from Google
5.0★
Cynthia Milano's Review Sourced from Google
Good experience from start to finish. The team was professional, and our new software has made a huge difference. Highly recommend them.
Reviews verified by DesignRush and sourced from the agency's profile
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Away Digital Teams specializes in recruiting and managing top talent in Vietnam for businesses seeking to establish and oversee remote teams. Our comprehensive service ensures seamless team building and management, enabling companies to thrive in today's digital landscape...
Top Services:
Digital Services
Web Development
Software Testing
Mobile App Development
Software Development
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Location
Austin, Texas
Number of Employees
250 - 499
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
4 Projects Listed
Away Digital Teams Services
Digital Services
Web Development
Software Testing
Mobile App Development
Software Development
IT Services
DevOps Consulting
Accounting
Customer Support
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
#1 in Cybersecurity, Blockchain, AI&ML, Python, NodeJS
Apriorit is a leader in smart contract development, cybersecurity services, along with advanced data management technologies. Other services offered by this IT firm include SaaS engineering, Driver development, system programming, professional reverse engineering, blockchain, AI&ML and more...
Top Services:
Software Development
Blockchain
IT Services
Cybersecurity
Web Development
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Location
Lynn, Massachusetts
Number of Employees
250 - 499
Average Hourly Rate
$100/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Apriorit Services
Software Development
Blockchain
IT Services
Cybersecurity
Web Development
Web Design
AI Development
Mobile App Development
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Designing and Building Platforms for Your AI Bot Development.
ISBX (Interactive, Strategy, Branding, Execution) stands as the premier web and mobile application development agency in Southern California, boasting extensive expertise across a diverse spectrum of digital services such as Mobile, Blockchain, IoT, Web3, and Web Development. With a track record of...
Top Services:
Software Development
Mobile App Development
Web Development
Blockchain
IoT
Show more
Location
Los Angeles, California
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
7 Projects Listed
ISBX Services
Software Development
Mobile App Development
Web Development
Blockchain
IoT
UI/UX Design
Web Design
Wearables
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Apple
RedBull
Lexus
American Honda
Brain Corp
Science 37
WAG!
USC
Pasco Scientific
Data sourced from the agency's DesignRush profile
ISBX Reviews & Testimonials
Peggy McCabe
Review from Google
5.0★
Peggy McCabe's Review Sourced from Google
ISBX is a very professional and talented web development company. The overall experience I had with them in the redesign of our website was outstanding. They were extremely creative, provided viable options at all junctures, and delivered on time and on budget. ISBX also provided a very hands-on, and professional team who understood our need for brand engagement and outreach to a new audience with our website refresh. The team also optimized the new site for mobile usage which was very important to us. ISBX successfully executed our complex project efficiently, with excellent communication and attention to detail at every step. I wouldn't hesitate to work with them again.
Kim Farley
Review from Google
5.0★
Kim Farley's Review Sourced from Google
ISBX helped us from concept to launch without any issues. They were communicative, patient, and able to quickly implement solutions to project changes that came up along the way. We appreciate that they took the time to hold our hands with explanations and detailed questions to make the process as stress free as possible and to get a good understanding of our product.
Tony Alfaro
Review from Google
5.0★
Tony Alfaro's Review Sourced from Google
I've been a client of ISBX for nearly three years. They are hands down the best development firm I have ever worked with. They are on budget and on time consistently. They are trustworthy, highly communicative, and very versatile. Nothing is in the "too hard box" for them.
Reviews verified by DesignRush and sourced from the agency's profile
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Since 2006, X-Team has helped companies scale high-performing engineering teams by connecting them with elite remote developers from around the world...
Top Services:
IoT
Software Testing
Blockchain
VR/AR
Mobile App Development
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Location
Austin, Texas
Number of Employees
500 - 999
Average Hourly Rate
$99/hr
Minimal Budget
$25,000 - $50,000
X-Team Services
IoT
Software Testing
Blockchain
VR/AR
Mobile App Development
Staff Augmentation
Cybersecurity
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Inument is a custom software development company that specializes in providing tailored offshore IT staff augmentation, custom development, and seamless digital integration services...
Top Services:
Web Design
Web Development
eCommerce Development
WordPress Website Design
Software Testing
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Location
New York City, New York
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$25,000 - $50,000
Inument Services
Web Design
Web Development
eCommerce Development
WordPress Website Design
Software Testing
AI Development
Mobile App Development
Software Development
Staff Augmentation
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Outpost4 is a multimedia design studio that builds apps, provides QA consulting, and design support for your brand. We build games and apps that surprise and delight. We have an eye for quality and a disciplined approach to design. We don't believe in shortcuts or AI, we are artisans and we have a...
Top Services:
Graphic Design
Digital Services
Logo Design
Design Services
Audio Production
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Location
New York City, New York
Number of Employees
Under 49
Minimal Budget
$25,000 - $50,000
Outpost4 Services
Graphic Design
Digital Services
Logo Design
Design Services
Audio Production
Web Design
Software Testing
Mobile App Development
Software Development
VR/AR
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Ebryx LLC is a 360° cybersecurity and secure engineering company trusted by enterprises, startups, and governments to safeguard critical digital ecosystems. Since 2008, we have combined advanced threat research, 24/7 security operations, and deep product engineering expertise to deliver protection that is...
Top Services:
Cybersecurity
DevOps Consulting
Cloud Consulting
Staff Augmentation
Big Data Analytics
Show more
Location
Salem, New Hampshire
Number of Employees
100 - 249
Average Hourly Rate
$37/hr
Minimal Budget
$25,000 - $50,000
Ebryx LLC Services
Cybersecurity
DevOps Consulting
Cloud Consulting
Staff Augmentation
Big Data Analytics
IT Compliance Solution
Mobile App Development
AI Development
Blockchain
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
What services does a software testing company provide for your business in the United States?
They provide a comprehensive range of services designed to validate and improve software quality through systematic evaluation and advanced tooling.
Core testing services include:
Quality assurance and testing strategy: Audits software and defines testing scope, priorities, coverage, approach, and reporting.
Functional testing: Verifies that software features work according to specified business and functional requirements.
Regression testing: Detects unintended issues introduced by system changes and releases.
Performance and load testing: Measures the application’s reliability and responsiveness during peak usage.
Security testing: Identifies and resolves security vulnerabilities and tests against compliance and governance requirements.
Usability testing: Assesses user experience, interface intuitiveness, and overall accessibility of the solution.
Integration and API testing: Validates how different system components and third-party services work together.
In addition to these services, software testing companies implement a mix of manual (often for exploratory and user experience-focused scenarios) and automated (repeatable checks throughout the development cycle for speed and consistency) testing models.
How much does software testing cost?
Software testing costs about 15%-25% of the development costs or 23% of the IT budget. In terms of hourly rates, US software testing companies charge an average of $100-$250 per hour, with more complex systems or specialized tests going beyond $300/hour.
The final rate will depend on solution complexity, testing coverage, quality requirements, project timeline, and current technical debt.
Here’s how much software testing costs as a percentage of the software development budget:
Critical systems and highly regulated industries: 40%-50%
Enterprise applications: 25%-35%
Consumer-facing applications: 15%-25%
Mobile applications: 20%-30%
In practice, basic one-time testing projects, such as a website penetration test, cost approximately $5,000-$10,000.
On the other hand, continuously evolving software solutions that require regular comprehensive testing can fetch between $20,000 and $70,000+ per month.
Are there any additional costs to consider when working with US software testing agencies?
Beyond project scope, complexity, and timeline, these are additional costs to consider when working with software testing agencies in the USA:
Tooling and platform fees: Software license or subscription fees for device farms, performance testing platforms, and security scanning tools may be billed separately from the company’s overall rates.
Device/browser lab coverage: For tests that require broad compatibility coverage, costs can increase based on access to real devices, operating system versions, and browsers.
Scope growth: New testing requirements, additional integrations, new platforms (mobile/web), or expanding acceptance criteria often require a change order.
Additional test cycles: Extra rounds of re-testing and regression tests beyond what’s defined in the service level agreement (SLA) incur additional costs.
Defect remediation effort: Fixing defects is often outside the testing scope and is billed as an additional engineering or development fee.
Compliance and security deliverables: If you require additional formal evidence (e.g., audit artefacts and traceability) or expanded security testing, expect incremental charges.
How long does software testing usually take?
On average, software testing takes around 20%-40% of the total software development time. However, the final timeline will depend on infrastructure complexity, test scope and methodology, and quality requirements.
Here’s an approximate software testing timeframe based on the typical software project schedules:
Full Release Schedule
Software Testing Timeframe
Small software builds (e.g., Landing platforms)
12-24 weeks
2-4 weeks
Mid-sized builds (e.g., Fully customized mobile apps)
16-40 weeks
3-4 months
Large builds (e.g., Multi-module platforms)
36-144 weeks
6-12 months
Notably, software testing is often integrated into the software development lifecycle (SDLC). As such, it’s common to see QA and testing done in 1-2-week sprints rather than a separate stage altogether.
What industries do US software testing firms typically work with?
US software testing providers work with a wide range of industries, as all digital solutions need to be tested in some capacity. However, these are the sectors that quality assurance (QA) and testing experts work in based on the State of Testing Report 2025:
Tech: 35.2%
Finance and insurance: 16.9%
Others: 12.7%
Healthcare: 10.9%
Business and information: 4.5%
Retail: 4.1%
Marketing: 3.7%
Transportation: 3%
Government: 3%
Gaming: 2.6%
Education: 1.9%
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