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
525 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.
CloudFountain Inc is a leading web development agency for startups and businesses in USA. We offer custom software & web development, salesforce Integration, data analytics, cloud development, AI and Machine learning development solutions globally at an affordable cost...
Lightpoint Global is a bespoke software development company specializing in Web Development, Data Analytics, Data Engineering, Business Intelligence, IT Consulting, QA/AQA, Cloud infrastructure, UI/UX, and more.
We have a proven track record in Martech, Publishing, Fintech, Healthcare, and more...
ONE BCG is a global software consulting firm with over 22 years of experience solving complex problems with technology and delivering innovative solutions. We work together with the brightest minds to deliver comprehensive and scalable solutions focusing on user experience and technical excellence...
A team of diligent software technology professionals helping companies build world-class software products. Benchmark is an IT solutions company focused on Product Engineering and CRM Services...
Cybersecurity. Protection against vulnerabilities, data loss and DDoS. Penetration test. Protection
Cybersecurity. Protection against vulnerabilities, data loss and DDoS. Penetration test. Protection
Datami is a team of cybersecurity specialists who know all possible vulnerabilities that may damage your data.
We provide complete scanning of web resources with detailed description of vulnarabilities found on your website. Will remove any malicious code and hidden scripts...
MILL5 is a global AI and technology consulting company offering Software Consulting, Performance Engineering, and Managed Service offerings to businesses across various industries...
Kodehash is a leading App Development agency, based out of Gurugram, Dubai & New York. We have a global presence and years of industry-rich experience and expertise. At Kodehash, we transform your business expectations into a reality.
We provide a one-stop shop for all of your app and web development, as...
Audacix helps smart software teams ship their applications with zero bugs & zero known security vulnerabilities, every sprint. This helps you cut costs, release features faster and sleep easier knowing that your application and your customers data is secure. Talk to us to see how it could work for you...
Our focus is on providing businesses with the tools they need to reach their maximum potential through the use of our cutting-edge software solutions. Launch your product to market 2x faster with Techjay's strong business domain experience, technical expertise, extensive knowledge of the latest industry...
We build lasting relationships with the power of technology.
We build lasting relationships with the power of technology.
AAPNA Infotech is a completely virtual organization, with over 170 Commandos operating from all across the country. We are proud of our GREAT business culture and have been recognized as a Great Place to Work firm. As a result, our team members are energized and driven to provide excellent customer service...
BPO Connect has extensive expertise in the outsourcing sector, as well as global operating experience in countries such as the Philippines, India, Sri Lanka, Malaysia, Kenya, Rwanda, and Turkey. We understand what works (and what doesn't) in the outsourcing industry. This knowledge and operational expertise...
We deploy secure AI solutions that deliver positive ROI within weeks.
We deploy secure AI solutions that deliver positive ROI within weeks.
NineTwoThree AI Studio is a Boston-based AI agency that builds secure, production-grade AI and ML solutions with measurable ROI. Founded in 2012, our Ph.D.-level engineers and certified product managers have delivered 150+ projects for enterprise brands and startups alike...
Boutique studio of senior engineers building web, mobile, and AI products since 2015. We embed as a long-term extension of your team and ship code that lasts. 5.0 on Clutch, top 1% on Upwork...
We're a software development agency that builds products that scale. Our engineering-first culture and product-minded approach have powered success stories like Calendlythe scheduling platform that revolutionized meetings for millions...
Since 2006, X-Team has helped companies scale high-performing engineering teams by connecting them with elite remote developers from around the world...
Savvycom is an AI-driven software development and IT consulting company founded in 2009, helping enterprises design, build, and modernize digital systems that deliver measurable business outcomes. Recognized as one of Vietnams Top 10 Digital Technology Companies, Savvycom partners with organizations...
Supercharge - Innovating Digital Product Development
Supercharge - Innovating Digital Product Development
At Supercharge, we partner with our clients to turn disruption into opportunity by creating transformative digital solutions. With over 200 digital experts across New York, London, Amsterdam, Helsinki, Vienna, and Budapest, we develop digital strategies, design delightful interfaces, and build robust software...
Povio is a company that is based in San Francisco and specializes in designing and developing digital products that make a positive impact. With over 1000 successful projects delivered and a team of over 200 skilled professionals, we have collaborated with multinational companies like VW, unicorns such as...
Award-Winning AI Consultancy & Custom Software Development Company In UK & USA
Award-Winning AI Consultancy & Custom Software Development Company In UK & USA
Geeks Ltd is an award-winning AI consultancy and custom software development company. With 18+ years of experience and 1,500+ projects delivered, we help business leaders in Transport & Logistics, Construction, Manufacturing, Energy, Education, and Government harness AI to improve efficiency...
The Demski Group is a full-stack mobile and web development firm that creates beautiful, engaging, state-of-the-art applications and designs to help businesses grow and succeed...
Bitsol Technologies is a global, multifaceted provider of software development services that turns your difficult business issues into digital solutions...
We have extensive global resources, deep industry, business process, and technological expertise, as well as a track record of producing uplifting success tales for businesses all over the world...
New Wave Devs is an IT staff augmentation company. We place vetted mid and senior engineers into your existing product team, on your codebase, inside your process...
Flower Press Interactive designs and builds websites, apps, and platforms. We take early ideas and bring them into a user-validated, production-ready state. From marketing websites to internal systems, we turn complex problems into products worth building...
Rocket Systems is focused on producing high-quality code, we take extra precautions to ensure that our technological approach is congruent with the ambitions of our customers. Additionally, we strive to create code bases that are both scalable and easily maintained. In order to construct a digital product...
We Build Solutions that Help You Solve Challenges and Meet Goals
We Build Solutions that Help You Solve Challenges and Meet Goals
Cybersoft is uniquely skilled to offer ubiquitous software solutions that are relevant and in demand for todays rapidly changing business dynamics. We bring the best of quality and cost effective software development using latest SCRUM based agile development that works in sync with the customer expectations...
Rubico is passionate about creating websites, web applications and mobile apps! With offices in the US and India, we are well equipped to help any business achieve its development goals!...
A full-service IT company with ISO 9001:2015 certification, Cybrain Software Solutions provides top-notch software solutions to brands all over the world...
Ajackus is your one-stop solution for all your engineering needs. We have a team of talented engineers across India who can be quickly hired, trained and aligned to your business needs...
Empowering Innovations with Artificial Intelligence
Empowering Innovations with Artificial Intelligence
Innovature is a global business consulting and technology services provider that specializes in delivering high-quality IT solutions. With a focus on digital and technology transformations, they offer custom software development and consulting services across various technology verticals, in addition to...
Azilen Technologies is a prominent enterprise AI development company that takes pride in delivering exceptional AI, Data, and HRTech solutions to organizations seeking digital transformation...
Custom Software Developer | Top Rated | 100% US Based
Custom Software Developer | Top Rated | 100% US Based
Pell Software is a 100% US based company focused on building long term, authentic partnerships. We focus on learning about your specific business needs in order to find the best software solution that will help you scale your business...
Headquartered in Newark, New Jersey, PERI is a global consulting and technology services company specializing in industry-specific solutions, strategic outsourcing and integration services...
AI-Assisted Logistics Software Development at Scale
AI-Assisted Logistics Software Development at Scale
Scaling logistics software delivery through deep industry expertise, AI-assisted development, and scalable delivery capacity. We build and modernize custom systems for logistics, supply chain, and transportation operations, helping clients improve efficiency and successfully deliver medium and large...
Empower Your Business With Custom Software, AI, & Nearshore Talent Solutions
Empower Your Business With Custom Software, AI, & Nearshore Talent Solutions
Bluelight is a U.S.-headquartered nearshore software development consultancy. Bluelight provides top-tier IT talent from Latin America (and onshore) who are fluent in English, work U.S. business hours, and serve as a cost-effective alternative to U.S.-based hires...
Binate is a digital transformation partner specializing in AI-powered app development and intelligent solutions for businesses of all sizes. We combine innovation with technical expertise to design user-focused applications that drive growth...
Introducing Develoware: A game-changing catalyst for businesses. Empowering visionary leaders and their teams with state-of-the-art development tools and unparalleled integration capabilities. Embrace the power of innovation, streamline operations, and achieve unprecedented growth. Elevate your business with...
Your Trusted Partner in Software Development, Product Design and QA
Your Trusted Partner in Software Development, Product Design and QA
inVerita is a global software, AI, and data engineering company with 150+ engineers across Europe, the USA, and Latin America(Colombia). We build secure, scalable solutions for healthcare, fintech, logistics, retail, defense, and e-learning...
The Joseph Company is a trusted technology partner providing custom web development & IT services to businesses across St. Louis and Southern Illinois. Headquartered in Arnold, Missouri, we serve clients throughout the region with a commitment to excellence, responsiveness, and long-term partnership...
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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