Explore leading software testing companies that launch high-performing products, detect bugs early, improve stability, and ensure every feature works correctly across devices and environments. For teams focused on the US market, we also highlight trusted partners with region-specific expertise, including top US-based software testing companies.
Best Software Testing Firms
10 Companies-Rankings updated: September 02, 2026
Every agency on DesignRush has been evaluated for its expertise and client feedback to empower informed choices. Some listings include paid partnerships.
At Rootstrap, we help companies scale people, processes, and products through outcome-driven development. We’ve helped launch more than 750+ digital products with more than 100 million combined downloads...
Top Services:
Mobile App Development
Software Development
Web Development
AI Development
Software Testing
Show more
Location
Los Angeles, California
Number of Employees
50 - 99
Average Hourly Rate
$87/hr
Portfolios Count
8 Projects Listed
Rootstrap Services
Mobile App Development
Software Development
Web Development
AI Development
Software Testing
Blockchain
Web Design
Staff Augmentation
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
WalletJoys
MasterClass
Ownable
Generis
TONY ROBBINS COACHING EMPIRE
Merry Jane
Google Opus
Globalization Partners
Data sourced from the agency's DesignRush profile
Rootstrap Reviews & Testimonials
Bridget Garcia Chief Marketing Officer at Undisclosed
4.0★
Enterprise Review from Bridget Garcia
We needed a new website for our business and we knew it was time to update the design and make it more user friendly. Rootstrap helped us create our site with all of the latest technology and they were very flexible in terms of our requests. Award winning work! Kudos.
Ori Goldman Co-Founder at Loftey
5.0★
Web Development Review from Ori Goldman
When I was looking to build my MVP I spoke to about 10 shops. Little did I know that I would still be working with that same company over 5 years later. Rootstrap built our MVP and we have stuck with them ever since. Through multiple pivots, design changes, thousands of implemented features, we still feel lucky that we found them 5 years ago.
Pete Ghiorse CEO/Founder at GiveTide
5.0★
HTML5 Review from Pete Ghiorse
Rootstrap is the real deal. We've worked with them on our app from day one. From the first napkin sketch through V2 of our app, Rootstrap has been one of the most reliable value-producing companies I've ever worked with.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
VerifiedVerified by the DesignRush team for authenticity and credibility.
Engineering peace of mind
At Vention, unparalleled customer care isnt just a promise its our mission. We blend personalized experience, unwavering attention to detail, and a genuine passion for your business, ensuring that every aspect of our collaboration is tailored to your success...
Top Services:
Software Development
Staff Augmentation
Mobile App Development
Software Testing
Web Development
Show more
Location
New York City, New York
Number of Employees
1000 & Up
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
15 Projects Listed
Vention Services
Software Development
Staff Augmentation
Mobile App Development
Software Testing
Web Development
Blockchain
AI Development
Cloud Consulting
CRM Consulting
Cybersecurity
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
IBM
PayPal
Cuvva
Costa Coffee
Memrise
Urban
Tailored Dog Food Delivery
RealVNC
Label on a Cable
ClassPass
Data sourced from the agency's DesignRush profile
Vention Reviews & Testimonials
Lee Tupper CTO at Remotiv (formerly Financial Soundings)
3.8★
Mobile App Development Review from Lee Tupper
Vention has delivered excellent design prototypes and accurate time estimates. The app is still in beta mode, and the partnership with [...] Vention will [continue] until the release of the next version. Vention is a reliable team that offers quality service. (Verified via email)
Jon Wade CTO & Founder at Union54
5.0★
Staff Augmentation Review from Jon Wade
Vention’s efforts allowed the successful development of the product, resulting in new customers. They provided backend developers, business analysts, UI designers, and QA testers to develop our solution. Vention cultivated a seamless partnership through constant updates and a collaborative approach. Overall, their team’s well-rounded expertise was impressive.
AJ Canty CTO and Co-Founder at Primer
5.0★
Web Development Review from AJ Canty
We’ve been working with Vention for quite some time and consider them an extension of our team, rather than an offshore vendor. We needed solid mobile developers to work with our in-house engineers to build our Primer SDKs on both mobile platforms. This was not a trivial thing as it required a lot of cross-functional communication, but the Vention team was up to the challenge. They quickly adopted the best practices we follow at Primer and proved to be effective and proactive.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Akveo is an AI consulting and software development company, helping organizations build, modernize, and scale digital products...
Top Services:
Mobile App Development
AI Development
Software Development
Web Development
Software Testing
Show more
Location
Austin, Texas
Number of Employees
100 - 249
Average Hourly Rate
$55/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
12 Projects Listed
Akveo Inc Services
Mobile App Development
AI Development
Software Development
Web Development
Software Testing
Web Design
IoT
Staff Augmentation
eCommerce Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
PWC
EHG
ParkIT
Aloft
Dorsia
Felmo
Compass Point
Afloat
Accuro Solutions
SKRIVANEK
Data sourced from the agency's DesignRush profile
Akveo Inc Reviews & Testimonials
Hussein Koteiche Founder at The Health Exams
5.0★
Web Development Review from Hussein Koteiche
I worked with Akevo to build our Health Exams Portal, and overall it was a really positive experience. They understood what we were trying to build from both a technical and business perspective, which made collaboration easy. Communication was clear, timelines were realistic, and they handled changes in scope without friction. If youre looking for a development and marketing partner, I would highly recommend Akevo and will be working with them again in the future.
Gurova Dora Marketing Director at UI Bakery
5.0★
Web Development Review from Gurova Dora
Akveo helped us with our marketing website during our rebranding process when we needed to do that in a short period of time. They showed themselves as a reliable and committed partner who deliver quality work and respect the deadlines.
Maria Guarino Review from Google
5.0★
Maria Guarino's Review Sourced from Google
We needed to automate a core part of our ops workflow and didn't want a generic off-the-shelf fix. Akveo took the time to understand our setup, proposed a phased approach that fit our budget, and delivered exactly what we discussed. On time and without surprises. Communication throughout was clear and consistent. Really impressed with their hands-on approach to AI development.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Lampa delivers high-quality outsourcing services and custom software solutions that drive innovation and business success in today's competitive digital landscape. We are helping to launch start-ups ! We are developing 20+ software solutions every year. Our projects reached more than 12 000 000 downloads...
Top Services:
Web Development
Mobile App Development
Software Testing
UI/UX Design
IT Services
Show more
Location
Vinnytsia, Ukraine
Number of Employees
50 - 99
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
24 Projects Listed
Lampa Software Services
Web Development
Mobile App Development
Software Testing
UI/UX Design
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Dogiz
1+1 Media
Virgin Radio
LetyShops
Audiokitab
Crypto Crew
Data sourced from the agency's DesignRush profile
Lampa Software Reviews & Testimonials
Stu Da Review from Google
5.0★
Stu Da's Review Sourced from Google
If you need to develop a high-quality mobile application, then this is the place for you. They do it well (1+1 and LetyShops did not complain at all) and maintain an excellent balance of price and quality.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Bellosoft is a global software development agency helping businesses scale through custom solutions in web, mobile, AI, and cloud technologies. With a focus on innovation, agility, and measurable results, we partner with startups and enterprises in the US, UK, and Europe to deliver reliable products and...
Top Services:
Software Development
UI/UX Design
Web Development
Mobile App Development
eCommerce Development
Show more
Location
Watford, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$65/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
16 Projects Listed
Bellosoft Limited Services
Software Development
UI/UX Design
Web Development
Mobile App Development
eCommerce Development
AI Development
Software Testing
Web Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
KiwiQA is a global leader in software testing, delivering high-quality solutions across industries. With expertise in automation, performance, security, and accessibility testing, we empower businesses to launch flawless and secure software faster...
Top Services:
Software Testing
Location
Sydney, Australia
Number of Employees
100 - 249
Average Hourly Rate
$10/hr
Minimal Budget
$10,000 - $25,000
KiwiQA Services Services
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
For a decade, we have been committed to turning ideas into reality! Since our inception, we have nurtured an ideal: to channel ideas into projects that not only come to fruition, but also contribute positively to society...
Top Services:
Mobile App Development
Web Design
eCommerce Development
Software Testing
Software Development
Show more
Location
BrasĂlia, Brazil
Number of Employees
Under 49
Average Hourly Rate
$270/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
1 Project Listed
APP2B Services
Mobile App Development
Web Design
eCommerce Development
Software Testing
Software Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
VerifiedVerified by the DesignRush team for authenticity and credibility.
Build it. Run it. Own it.
We embed development teams to build the right AI-enabled custom software, and equip your team to run it...
Top Services:
Software Development
Cloud Consulting
UI/UX Design
eCommerce Development
DevOps Consulting
Show more
Location
St. Louis, Missouri
Number of Employees
Under 49
Minimal Budget
$50,000 & Up
Sketch Development Services Services
Software Development
Cloud Consulting
UI/UX Design
eCommerce Development
DevOps Consulting
Staff Augmentation
AI Development
Software Testing
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
U.S. Bank
Centene Corporation
Maritz
Change Healthcare
Stifel
Reinsurance Group of America (RGA)
bioMerieux
CareSource
CENTEGIX
Purina
Data sourced from the agency's DesignRush profile
Sketch Development Services Reviews & Testimonials
Monica Review from Google
5.0★
Monica's Review Sourced from Google
Amazing and talented people. I’ve worked for both client and agency side and can can say their partnership is amazing. They truly care about ongoing operations and not just ending it at a project level. Highly recommend! Message me if you want specifics.
John Andesilich Review from Google
5.0★
John Andesilich's Review Sourced from Google
I own a marketing firm in Troy MO and I recently met with Calvin at Sketch Development Services to discuss a software development project I have been thinking about pursuing. He was very nice, easy to speak to and even though his field is a bit out of my knowledge base, he was able to explain things in a way that made perfect sense. I look forward to working with him and his team in the future and recommend anyone looking for a software or app development company to give them a try.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Etech All is a leading software development company specializing in creative web design and robust web development solutions. We help businesses build a powerful online presence through innovative, user-focused, and results-driven digital experiences. Our expert team delivers customized, high-quality...
Top Services:
Web Development
WordPress Website Design
Mobile App Development
Software Development
Software Testing
Show more
Location
Miami, Florida
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
Etech All Services
Web Development
WordPress Website Design
Mobile App Development
Software Development
Software Testing
IT Services
eCommerce Development
Web Design
Logo Design
Digital Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
IoT, AI/ML, Mobile apps, Cloud & Web apps, Embedded Systems & Hardware
End-to-end development in IoT, Embedded Systems, Firmware, DevOps, AI/ML, Mobile Apps, Enterprise Software and Cloud. Engineers ensure top-grade code, rigorous QA and scalable digital products. Engage via fixed-bid projects, agile delivery pods, dedicated teams, or staff-augmentation...
Top Services:
IoT
Wearables
AI Development
Mobile App Development
Software Development
Show more
Location
Kochi, India
Number of Employees
Under 49
Average Hourly Rate
$20/hr
Minimal Budget
$10,000 - $25,000
Infolitz Software Private Limited Services
IoT
Wearables
AI Development
Mobile App Development
Software Development
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Frequently Asked Questions About Software Testing Companies
What services do software testing firms provide?
Software testing companies provide different testing services to identify errors, security risks, performance issues, and how the software behaves in real-life situations and across devices. As part of their software testing service, they also check if each feature works as expected, fix bugs, make improvements, and make sure new software development updates don’t break existing functions, so the software quality remains stable.Â
Hourly rates for QA testing range from $25 to $200+. The final cost is determined based on the size of the software or application, its complexity, required testing type, tech stack (custom-built and older legacy systems cost more), and niche. Â
The rate will also depend on the seniority of the software tester. Across the United States, junior quality assurance (QA) tester may charge $70 to $110 per hour, while the rate for a senior QA mentor and automation engineer can range from $130 to $200 per hour. Â
Special software testing services such as QA audit goes from $5,000 to $25,000.Â
How can businesses know what type of software testing do they need?
Businesses can determine what type of testing solutions they need based on the potential impact of failures and the likelihood of defects. Namely, if they encounter:Â Â
Core functionality issues: Use functional testing to verify features work as expectedÂ
Unstable code or new features: Use unit testing for individual components and integration testing for modules working togetherÂ
Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing featuresÂ
Performance and load issues: Use performance and load testing to evaluate speed and scalabilityÂ
Security issues: Security and penetration testing are commonly used across apps handling sensitive user dataÂ
Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end usersÂ
Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versionsÂ
There is also the option to choose between manual and automated testing. Â
Is automated testing more expensive than manual testing?
As an investment, automated testing is pricier than manual testing but offers a lower cost-per-test over time as it can run the same scripts repeatedly, without human intervention. Conversely, manual testing entails lower upfront fee, but its cost grows linearly as the project grows, as every test cycle requires paid hours from QA testers. Â
So, for short-term projects or ones with shifting requirements, manual testing is considered a more economical option, whereas for maintenance and regression cycles, automated testing grants better return on investment.Â
The main distinction between these methodologies is that manual testing relies on human observation and interaction to identify defects, whereas automated testing uses software scripts to compare outcomes against predicted results. Â
Manual testing is best suited for exploratory testing, usability assessments, ad-hoc bug hunting, and minor hotfix verifications where script development would be inefficient. Automated testing, on the other hand, is primarily used for regression testing to make sure the new code does not break existing features.Â
How do businesses measure the effectiveness of software testing?
The effectiveness of the software testing is measured via:Â
Code coverage: The percentage of the code that has been testedÂ
Defect density: The number of defects found per unit of codeÂ
Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective testsÂ
Time to detect and fix defects: The time it takes to identify and fix software defects and software bugsÂ
Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase Â
ReceiveProposals
For your project
1
Specify your budget, timeline and project requirements
2
Our experts curate a list of up to 5 most qualified candidate agencies
3
We connect you with them so you can choose the most suitable partner