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
5 Companies-Rankings updated: September 04, 2026
Every agency on DesignRush has been evaluated for its expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Softeq is a versatile technology and Greentech company offering a wide range of services, including embedded system development, machine learning, digital transformation, hardware design, UX/UI design, and more...
Top Services:
Mobile App Development
Software Development
Software Testing
Blockchain
Wearables
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Location
Houston, Texas
Number of Employees
250 - 499
Average Hourly Rate
$80/hr
Minimal Budget
$50,000 & Up
Portfolios Count
8 Projects Listed
Softeq Services
Mobile App Development
Software Development
Software Testing
Blockchain
Wearables
UI/UX Design
Cybersecurity
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Lenovo
Epson
Microsoft
WTA
NVIDIA
Verizon
G.J.Gardner
Walt Disney Parks and Resorts
Happiest Baby
Data sourced from the agency's DesignRush profile
Softeq Reviews & Testimonials
Quan Gan Owner at Gantom Lighting & Controls
5.0★
Software Development Review from Quan Gan
We collaborated with Softeq to develop an infrared emitting platform. Softeq provided software development and support services, streamlining our project. While our hardware technology was excellent, Softeq elevated our company's products with superb software development and implementation solutions. Working with Softeq was highly beneficial for us, as the agency managed our projects more efficiently due to exceptional project management and organized workflows.
Jeff Johnston Founder and Chief Executive Officer at A-List Enterprises
5.0★
Mobile App Development Review from Jeff Johnston
We hired Softeq for mobile app development services. Softeq developed a functional and user-friendly app, efficiently integrating productivity features like calendar, contacts, and task management. The agency organized regular meetings with our product management department, communicated effectively, and promptly resolved issues. Softeq's team worked diligently and provided valuable insights. We were satisfied with Softeq's services.
Trent Gardner Information Technology (IT) Manager at G.J. Gardner Homes
5.0★
Software Development Review from Trent Gardner
We worked with Softeq for software redevelopment services to improve our company's proprietary software. Softeq updated the business platform, streamlining operations and enhancing the platform's user UI and functionality. This improvement aided our sales, job estimating, purchase orders, and administration efforts. Softeq's team was professional, attentive, and prompt in implementing feedback. The agency delivered high-quality work, impressing our company's internal stakeholders.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
CHI Software is a technology solution provider that offers a full set of software-based services from custom software development to maintenance & support. Our talented team is passionate about Generative AI, Cloud Computing, Data Engineering, and IoT. CHI's success comes from care of every client...
Top Services:
AI Development
Mobile App Development
Software Development
Web Development
Staff Augmentation
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Location
Lviv, Ukraine
Number of Employees
500 - 999
Average Hourly Rate
$60/hr
Minimal Budget
$50,000 & Up
Portfolios Count
12 Projects Listed
CHI Services
AI Development
Mobile App Development
Software Development
Web Development
Staff Augmentation
Software Testing
IoT
Big Data Analytics
IT Services
DevOps Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Vodafone
Lecre
Media Mrkt
Data sourced from the agency's DesignRush profile
CHI Reviews & Testimonials
David Gornshtein Co-Founder at Binadox
5.0★
Web Development Review from David Gornshtein
My company was looking for a development team to proceed with the development process. We needed to set up a service [that] allows our clients to monitor, control, and optimize their Cloud & SaaS spend. [The] CHI Software team delivered services and technologies we need[ed] to reach our financial goals. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Zoho consulting, development and integration services for operationally complex organizations.
CodeStringers helps growth-stage and small-to-mid-market companies implement, integrate, and operate Zoho-centered digital enablement solutions by combining senior executive consulting, cost-effective delivery teams, and custom software capabilities when needed...
Top Services:
Software Development
AI Development
Web Development
CRM Consulting
ERP Consulting
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Location
Santa Cruz, California
Number of Employees
50 - 99
Average Hourly Rate
$55/hr
Minimal Budget
$50,000 & Up
CodeStringers Services
Software Development
AI Development
Web Development
CRM Consulting
ERP Consulting
Managed Services
Mobile App Development
Software Testing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
TĂĽbr Storage
Addiction Rep
True Pet Kitchens
MasterControl
Tonal
MindTRAK Golf
Mido Play
Inboard Technology
SiteOne Services
KnowledgeDesk
Data sourced from the agency's DesignRush profile
CodeStringers Reviews & Testimonials
Lori Feld Oakley Executive VP at MasterControl
5.0★
Software Development Review from Lori Feld Oakley
Our Services organization is scaling quickly and we urgently needed a custom software application to automate our workflows, without breaking our annual budget. CodeStringers was the perfect fit, supporting us from ideation through go-live and everything in between. They innovated, hit their deadlines and released an amazingly high quality application that decreases our internal costs and improves our reputation with our customers. It would not have happened without CodeStringers.
Christian Schraga CEO at Tabula Learning
4.8★
Enterprise Review from Christian Schraga
CodeStringers is the perfect outsourcer to call If you have a solid software business idea but don’t know exactly how to bring it to life. They have both a top-notch development team as well as an executive staff with expertise in marketing, finance, and general business acumen. So they can not only build a product for you but they can make sure that the product you want to build is likely to succeed in the marketplace.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Directio is a global tech partner that brings together people, processes, and technology to code successnot just by building software, but by solving todays challenges and preparing businesses for whats next. With a unique blend of consulting, tailored development, and flexible collaboration models, we...
Top Services:
Software Development
Software Testing
DevOps Consulting
IT Services
IT Compliance Solution
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Location
Warsaw, Poland
Number of Employees
100 - 249
Average Hourly Rate
$70/hr
Minimal Budget
$50,000 & Up
Directio Services
Software Development
Software Testing
DevOps Consulting
IT Services
IT Compliance Solution
Cloud Consulting
Staff Augmentation
Managed Services
CRM Consulting
ERP Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Tacton
Coty
UCC Coffee
Exensor
Webropol
Data sourced from the agency's DesignRush profile
Directio Reviews & Testimonials
Joanna Cinkusz Review from Google
5.0★
Joanna Cinkusz's Review Sourced from Google
Direct Communication provides excellent opportunities to work with clients in the international team, supporting a strong and professional work culture
Michał Krukowski Review from Google
5.0★
Michał Krukowski's Review Sourced from Google
As an Employee I am amazed how good my life became since I joined that company
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
From enterprise software solutions and innovative custom maps featuring intuitive wayfinding, to cutting-edge AR and VR experiences, we specialise in crafting transformative technology...
Top Services:
Digital Services
Digital Strategy
UI/UX Design
Web Development
Software Testing
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Location
Sydney, Australia
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Mobiddiction Services
Digital Services
Digital Strategy
UI/UX Design
Web Development
Software Testing
Mobile App Development
VR/AR
Software Development
Product Design
Business Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NSW Department Of Primary Industries
InvoCare
Homeworld
Department of Customer Service
Sydney Royal EasterShow
Forestry Corporation of NSW
FarmGate Auctions
SharkSmart
WhaleWatch
Data sourced from the agency's DesignRush profile
Mobiddiction Reviews & Testimonials
D W Review from Google
5.0★
D W's Review Sourced from Google
After a few friendly email exchanges about what could make an app work better for me and no doubt others this group took on changes and for me astonishingly added the recommendation immediately.I’m impressed.
Chanel Gallen Review from Google
5.0★
Chanel Gallen's Review Sourced from Google
We made the decision to move our development back home, after years of working with offshore developers. The Mobi team made the transition seamless, coming up to speed on a complex auction system quickly so there was limited down time in development. Mobi doesn't feel like an agency partner, but part of the FarmGate team. They aren't afraid to speak up if they feel we're heading off course, advise us on the right technology partners and have worked through the night alongside us if s%#t ever hits the fan. We know they have our back!
Saloni Review from Google
5.0★
Saloni's Review Sourced from Google
Great place to work! The team is very smart and fun at the same time. Mike is an incredibly supportive and encouraging leader. ​If you want to work on exciting and creative projects - Mobiddiction is the ideal place to work at!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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
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