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
11 Companies-Rankings updated: September 03, 2026
Every agency on DesignRush has been evaluated for its expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Navus is a dynamic and forward-thinking software development company committed to transforming ideas into powerful digital solutions. With a focus on cutting-edge technologies and a passion for innovation, we specialize in creating bespoke software tailored to meet the unique needs of our clients...
Top Services:
Web Design
Web Development
WordPress Website Design
eCommerce Development
Mobile App Development
Show more
Location
KlaipÄ—da, Lithuania
Number of Employees
Under 49
Average Hourly Rate
$40/hr
Portfolios Count
7 Projects Listed
Navus Services
Web Design
Web Development
WordPress Website Design
eCommerce Development
Mobile App Development
Software Development
UI/UX Design
Software Testing
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
With passion and innovative spirit, we advise and support companies and organizations in their very individual digital transformation. Alter Solutions Deutschland focuses on supporting its customers in the fields Cyber Security, Cloud & Infrastructure, Software Delivery, Business Performance and Agile IT...
Top Services:
Software Development
Cybersecurity
Cloud Consulting
Big Data Analytics
Mobile App Development
Show more
Location
Dusseldorf, Germany
Number of Employees
50 - 99
Portfolios Count
5 Projects Listed
Alter Solutions Deutschland GmbH Services
Software Development
Cybersecurity
Cloud Consulting
Big Data Analytics
Mobile App Development
Software Testing
Web Development
DevOps Consulting
IT Compliance Solution
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Automotive
Telecommunications
Financial Services
Transport & Logistics
Data sourced from the agency's DesignRush profile
Alter Solutions Deutschland GmbH Reviews & Testimonials
Naveen IK Review from Google
5.0★
Naveen IK's Review Sourced from Google
Hello,I am very thankful to Alter Solutions GmbH, Deutschland for giving me the chance to work in Germany and trusting me in my role. The supportive work environment and the company’s focus on growth have made this experience very rewarding. It’s a pleasure to work with such a great organization.Special thanks to HR: Fabian Düesmann, Operations: Laura Thiel, and CEO: Thomas Fass.
B2B - Erklärvideo Review from Google
5.0★
B2B - Erklärvideo's Review Sourced from Google
We've had consistently positive experiences with Alter Solutions Germany. Questions and feedback were always answered reliably and comprehensively, and input was provided promptly. I definitely recommend All in One! The collaboration was successful and definitely a lot of fun. Thank you very much!
Birgit Brabeck Review from Google
5.0★
Birgit Brabeck's Review Sourced from Google
Digitalization partner with high technological expertise. Flexible approach. Project completion in time. Holistic approach. Absolutely recommended.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Delivering digital transformation - from consultancy and engineering, to AI, ML, cloud and UX
Delivering digital transformation - from consultancy and engineering, to AI, machine learning, cloud and UX...
Top Services:
Software Development
AI Development
Big Data Analytics
Cloud Consulting
Software Testing
Show more
Location
Leeds, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$100/hr
Portfolios Count
2 Projects Listed
Audacia Services
Software Development
AI Development
Big Data Analytics
Cloud Consulting
Software Testing
Staff Augmentation
DevOps Consulting
Mobile App Development
IT Services
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
AESSEAL
Techbuyer
Steris
National Institute for Health Research
Story Homes
Bellway Homes
ecar (a Europcar company)
ADM
Engie
Northern Trains
Data sourced from the agency's DesignRush profile
Audacia Reviews & Testimonials
Teodora Atanasoaei Review from Google
2.0★
Teodora Atanasoaei's Review Sourced from Google
I went to interview for a Delivery Manager role.Had 3 people interview me, one of which was dressed in sports outfit for the interview - I do not regard this as being professional.Second, the role advertised is not the same with the role itself. In the job description, the responsibilities were all related to Project Management, however when the interview started I was completely blindsided.They asked me to basically do the work of Sales, Product Owner, Design, Architecture and we spoke a little of Delivery as well.Only to be told later that because this is a consultancy, it's expected of you to do everything. The job does NOT pay for X5 roles with those responsibilities, but you are expected to do those tasks regardless.My advice - just write down all of these in the job advert, saves people time to decide whether it is suited for them or not.
Rass G Review from Google
5.0★
Rass G's Review Sourced from Google
Fantastic company to work for, great people with a lot of knowledge and experience. Always work to a high standard.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Ubertesters is a crowdtesting company that allows organizations to outsource the power of the crowd for their own digital testing or QA needs by using remote global vetted testers with devices...
Top Services:
Software Testing
Location
Ramsey, New Jersey
Number of Employees
Under 49
Average Hourly Rate
$15/hr
Minimal Budget
Under $1,000
Ubertesters Services
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
AppsFlyer
NetEase Games
Taboola
Akamai Technologies
Zalando
New York City Department
Miniclip
Bosch
Here Mobility
888 Holdings
Data sourced from the agency's DesignRush profile
Ubertesters Reviews & Testimonials
Raji Maduwantha Fernando Review from Google
5.0★
Raji Maduwantha Fernando's Review Sourced from Google
Ubertesters is excellent for testing.The platform is easy to use, so I can finish my testing tasks quickly. The team is always there to help and fix any challenges quickly. I'm happy to be part of such a professional community.
Chris Review from Google
5.0★
Chris's Review Sourced from Google
Testing with Ubertesters is simple. The platform is user-friendly, and the team is supportive. They answer my questions quickly. I'd suggest Ubertesters to any tester who wants to get experience in testing and make extra money on the way.
Ulia Alias Review from Google
5.0★
Ulia Alias's Review Sourced from Google
Ubertesters has been a game-changer for me in the freelance testing space. The project's diversity keeps things interesting, and what sets them apart is the genuine care they show for their testers, making it a fulfilling and enjoyable experience. I'm grateful to be part of this community.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We are a Swedish/Bosnian award-winning agency specializing in IT outsourcing and end-to-end software development. With 85 experts on our team, we work with ventures and established companies to turn ideas into functional, high-quality products...
Top Services:
Web Development
Mobile App Development
Software Development
IT Services
eCommerce Development
Show more
Location
Gothenburg, Sweden
Number of Employees
50 - 99
Average Hourly Rate
$60/hr
Minimal Budget
$10,000 - $25,000
ZenDev AB Services
Web Development
Mobile App Development
Software Development
IT Services
eCommerce Development
Staff Augmentation
DevOps Consulting
Software Testing
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Apadmi designs, develops and optimises mobile apps for leading brands. We unlock new value through strategy, platforms, middleware and systems integrations that transform the way they work...
Top Services:
Mobile App Development
UI/UX Design
Web Development
Software Testing
Blockchain
Show more
Location
Manchester, United Kingdom
Number of Employees
250 - 499
Average Hourly Rate
$200/hr
Minimal Budget
$50,000 & Up
Apadmi Services
Mobile App Development
UI/UX Design
Web Development
Software Testing
Blockchain
Software Development
CRM Consulting
Managed Services
IT Services
DevOps Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Co-op
Domino's Pizza UK and Ireland
The Guardian
United Utilities
HSS
NHS
SailGP
Argos
Charles Stanley
BBC
Data sourced from the agency's DesignRush profile
Apadmi Reviews & Testimonials
Thomas Booth Review from Google
2.0★
Thomas Booth's Review Sourced from Google
I recently had an experience back in 2022 with Apadmi that I feel compelled to share and have debated whether i should post this. As a professional eagerly looking forward to an interview with Apadmi, I was unfortunately met with a series of disappointments.Firstly, the structured process I was initially promised for the interview was not adhered to. This lack of organisation not only threw me off but also made it challenging to present myself effectively and forced to do a presentation in less than 24 hours notice.More concerning, however, was my interaction with the Managing Director, not sure if he is still there. I found his demeanour not just unprofessional but outright rude. This was disheartening, especially coming from a leadership figure in a reputable company. I've actually never been so humiliated in the professional environment.It's important for companies to remember that interviews are a two-way process. They are not just about evaluating candidates, but also about demonstrating the company's values and culture. Unfortunately, my experience with Apadmi fell short of the professional standards one would expect, however i would say Marcus, one of the board members was a delight in my first stage.I hope my feedback is taken constructively, as it is intended to highlight areas where there is significant room for improvement in how Apadmi manages its recruitment process and senior staff interactions.
Steve Jackson Review from Google
5.0★
Steve Jackson's Review Sourced from Google
Fantastic team, you can rely on them always.. Robert a partner of Apadami is an exceptional individual who supported me with my project in a professional manner. With his excellent peoples skills he will look after you. The person you can rely on anything and keep you assured. Will always go back to Apadami.
Manoj Ranaweera Review from Google
5.0★
Manoj Ranaweera's Review Sourced from Google
Apadmi's ability to spin out technology as separate companies is remarkable. A strong supporter of Manchester tech ecosystem, they became unbeatable in mobile category during the first three years of northern tech awards before it adopted a new structure and ownership. Another remarkable achievement is that the four founders have remained together during all these years. I wish them all the best.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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...
Top Services:
Software Development
AI Development
Digital Services
Product Design
Mobile App Development
Show more
Location
London, United Kingdom
Number of Employees
100 - 249
Minimal Budget
$50,000 & Up
Portfolios Count
6 Projects Listed
Supercharge Services
Software Development
AI Development
Digital Services
Product Design
Mobile App Development
Digital Strategy
IoT
UI/UX Design
Software Testing
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Empowering business success with custom software solutions
Lindner IT specializes in developing industry-specific software solutions that empower enterprises. Using technologies such as SolidJS, Svelte, VueJS, Astro, ASP.NET Core, and Rust with Actix, our experienced team excels at both frontend and backend web development. Using our knowledge of Microsoft Azure and...
Top Services:
Web Design
Mobile App Development
Web Development
UI/UX Design
Software Development
Show more
Location
Igersheim, Germany
Number of Employees
Under 49
Average Hourly Rate
$75/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
Lindner IT Services
Web Design
Mobile App Development
Web Development
UI/UX Design
Software Development
Software Testing
WordPress Website Design
SEO
Managed Services
Cybersecurity
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Enterprise businesses
Medium sized businesses
Small businesses
Data sourced from the agency's DesignRush profile
Lindner IT Reviews & Testimonials
Denise ! Review from Google
5.0★
Denise !'s Review Sourced from Google
I can only recommend Lindner IT to everyone.Robin Lindner always takes care of our various IT projects quickly and comprehensively. And if we ever had problems, he was usually able to fix them after a short time.Working together is fun and we don't regret our IT switch to Lindner IT in any way. On the contrary, we should have done this much earlier.Big thank you for the great support!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We specialize in Managed Services, Lightning Migration, Sales Cloud, Service Cloud, Marketing Cloud, Experience Cloud, and Einstein AI, delivering innovative solutions for businesses of all sizes from small, medium enterprises to Fortune 500 companies...
Top Services:
Managed Services
CRM Consulting
Cloud Consulting
DevOps Consulting
Software Testing
Show more
Location
Sydney, Australia
Number of Employees
100 - 249
Average Hourly Rate
$49/hr
Minimal Budget
$25,000 - $50,000
TechForce Services Services
Managed Services
CRM Consulting
Cloud Consulting
DevOps Consulting
Software Testing
Mobile App Development
Software Development
AI Development
IT Services
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Torrens (Laureate)
ModernStar
Centuria
INSW
ICMS
Data sourced from the agency's DesignRush profile
TechForce Services Reviews & Testimonials
Harendra Singh Review from Google
5.0★
Harendra Singh's Review Sourced from Google
TechForce Services has been a fantastic partner in helping us optimize our Salesforce platform. Their team is highly responsive, knowledgeable, and always willing to go the extra mile to ensure our success. We've seen significant improvements in our sales processes and overall efficiency thanks to their expertise. We can't recommend them enough!
Sharmistha Rath Review from Google
5.0★
Sharmistha Rath's Review Sourced from Google
I had the pleasure of working with TechForce Services on a Salesforce implementation project, and I must say, their outstanding work was truly impressive.From the outset, TechForce Services demonstrated their expertise, professionalism, and dedication to delivering quality results. They took the time to fully understand our business needs and provided a customized solution that not only met but exceeded our expectations.Throughout the project, the TechForce Services team was always available to answer any questions or concerns we had, providing timely updates and going above and beyond to ensure that the implementation was seamless. They also provided comprehensive training to our team, enabling us to use the new Salesforce platform with ease.Thanks to TechForce Services, our sales and marketing teams are now able to collaborate more efficiently, and we've been able to streamline our entire sales process. The implementation has helped us improve our productivity and had a positive impact on our bottom line.Overall, I highly recommend TechForce Services for any Salesforce implementation project. Their team is top-notch, and their commitment to customer satisfaction is exceptional. If you're looking for a reliable and experienced partner for your Salesforce needs, TechForce Services is the way to go.
Rakesh Bhujabal Review from Google
5.0★
Rakesh Bhujabal's Review Sourced from Google
TechForce Services is highly recommended for their outstanding work on Salesforce implementation project for my Org. I must say, the team is very professional, knowledgeable, and dedicated to delivering exceptional results.Thanks to their expertise, we've streamlined our processes and improved productivity in our Edu business. If you're looking for a reliable Salesforce partner, TechForce Services is the way to go.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Code Ethics is a technology consulting and development firm dedicated to delivering high-quality, scalable, and reliable digital solutions. We specialize in helping businesses transform ideas into impactful products through a combination of strategic consulting, modern engineering, and ethical execution...
Top Services:
Managed Services
IT Services
CRM Consulting
ERP Consulting
AI Development
Show more
Location
Hyderabad, India
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Code Ethics Services
Managed Services
IT Services
CRM Consulting
ERP Consulting
AI Development
Mobile App Development
Software Development
Web Development
Software Testing
Staff Augmentation
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