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

153 Companies-Rankings updated: October 24, 2026

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Transportation & Logistics × Sort by: Top Rated ×
  • Designli

    VerifiedVerified by the DesignRush team for authenticity and credibility.AI LeaderRecognized for strong visibility across AI-powered search and answer engines.

    Build software people actually pay for.

    At Designli, we turn software into real, revenue-generating businesses and we measure our success by yours. Real users on a working MVP in 30 days, guaranteed. Senior teams paid on outcomes, not promises. First 14 days fully refundable...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • Web Development
    • Web Design
    • Show more
    Location
    Greenville, South Carolina
    Number of Employees
    50 - 99
    Average Hourly Rate
    $85/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    17 Projects Listed

    Designli Services

    • Mobile App Development
    • Software Development
    • AI Development
    • Web Development
    • Web Design
    • UI/UX Design
    • Software Testing
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Goodwill
    • Earthlink
    • Rotary
    • State of South Carolina
    • Secur.Space
    • Grappos
    • Michelin
    • Accel Entertainment
    • Millennium Parking Garages
    Data sourced from the agency's DesignRush profile

    Designli Reviews & Testimonials

    • John Laporte
      John Laporte Founder at Vets on Point
      5.0★

      Mobile App Development Review from John Laporte

      Designli helped us define the requirements, features, and user experience for an app for our motorcycle organization. They produced technical documentation and a clickable prototype covering navigation, member tools, and safety features. They were responsive, delivered on time every time, and turned our broad concepts into something people could actually click through. The prototype got our stakeholders aligned, earned internal approval, and set us up for engineering, and working out design questions early should save us rework later.

    • Brandi Heffner
      Brandi Heffner Founder at BuckHub
      5.0★

      Mobile App Development Review from Brandi Heffner

      Designli built our SaaS product from scratch, using AI to speed up development, with AWS and Cloudflare in the stack, and they also handle our hosting and maintenance. We had a working MVP in just 30 days and have kept adding features since. In the first 60 days they went beyond what we expected, largely because they took the time to really learn our business and our market. Coordination through Basecamp and Google Meet has kept everything organized.

    • Thomas Simmons
      Thomas Simmons CEO at Simmons Driving School
      5.0★

      Mobile App Development Review from Thomas Simmons

      Designli took over app development and marketing for our driving school, with the goal of building a product we could eventually offer to other schools. Within two and a half months, the app was up and running in our own school. Their project management is excellent, and they push back constructively, thinking through what we actually need instead of building every request as-is.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • AI-Driven Software Development Company in Singapore

    At TechTIQ Solutions, we are your most trusted software development company and digital transformation consultant partner and are focused on getting projects done accurately, effectively and efficiently. Contact us today and tell us which business challenge you are facing, and we will help you to find an...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • AI Development
    • Show more
    Location
    Singapore, Singapore
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • AI-driven testing pipelines and built-in tools that push your software beyond its limits.

    BetterQA is a Cluj-Napoca based software testing company that has built 8 proprietary tools to power modern QA. We help startups and enterprise teams ship safer, more reliable software through practical, real-world testing services. We go beyond finding bugs, we help teams grow with confidence...

    Top Services:

    • Software Testing
    • IT Services
    • Cybersecurity
    • DevOps Consulting
    • Business Consulting
    • Show more
    Location
    Cluj-Napoca, Romania
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • Phenomenon Studio

    VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.

    We take brands, websites, and products to the next level.

    Phenomenon Studio is a boutique product design and development agency founded in 2019. We work with teams who've outgrown what they've built from venture-backed startups to established market leaders and own the work end to end: strategy, design, development, and post-launch...

    Top Services:

    • UI/UX Design
    • Web Design
    • Software Development
    • AI Development
    • Web Development
    • Show more
    Location
    Dover, Delaware
    Number of Employees
    50 - 99
    Portfolios Count
    136 Projects Listed

    Phenomenon Studio Services

    • UI/UX Design
    • Web Design
    • Software Development
    • AI Development
    • Web Development
    • WordPress Website Design
    • Branding
    • Mobile App Development
    • IoT
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Wisdom
    • iolo/RealDefense
    • Artisan
    • Polyform
    • Isora GRC
    • Qurtuba Online
    • OneText
    • Hormn
    • Airportr
    • Assetario
    Data sourced from the agency's DesignRush profile

    Phenomenon Studio Reviews & Testimonials

    • Jeffery Kienholz
      Jeffery Kienholz VP of Technology Operations at Edmentum
      5.0★

      Web Development Review from Jeffery Kienholz

      Phenomenon Studio was brought on board to revamp our existing web app. What was once a simple online study tool is now a cutting edge, AI-powered learning platform. The team introduced personalized learning experiences, intelligent progress tracking, and interactive features all designed to adapt to each students individual needs and boost engagement.

    • Lorenz Maresca
      Lorenz Maresca Research Analyst at Point72
      5.0★

      Mobile App Development Review from Lorenz Maresca

      Phenomenon Studio excels in designing and maintaining our app with aseamless, user-friendly interface. Their proactive approach, creative input, andtechnical expertise ensure a reliable and professional experience for our clients. They consistently deliver on time, enhance functionality, and demonstrate a deepunderstanding of fintech user needs.

    • Eileen Daunt
      Eileen Daunt Head of School at Bayview Glen
      5.0★

      Web Development Review from Eileen Daunt

      The team produced a user-friendly and aesthetically pleasing platform, increasing inquiries and requests for information. Phenomenon Studio's work received positive feedback from stakeholders and they also provide excellent project management.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Where Tech Meets Minds: Crafting PHP Marvels

    GMTA Software specializes in creating customized websites and mobile app development solutions as an expert software developer. Our team guides you on your path to digital transformation by establishing an open and transparent communication bridge...

    Top Services:

    • Mobile App Development
    • Web Development
    • Web Design
    • Software Testing
    • Software Development
    • Show more
    Location
    Texas City, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    38 Projects Listed
  • Quality, Experience, Transparency, Results

    Mercury Development offers best in class Software Development, Mobile Apps, UI/UX, QA, ML, Data Science and more. With over 23 years in business, and over 400 employees, Mercury has the experience required to deliver your project on time and on budget...

    Top Services:

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • Software Testing
    • Wearables
    • Show more
    Location
    Stuart, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Portfolios Count
    8 Projects Listed
  • Kevych Solutions

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    Expert-Vetted - TOP 1% in Mobile App Development

    Kevych Solutions isn`t just a software development team - we`re your partners in creating innovative, high-quality digital solutions that truly make an impact...

    Top Services:

    • Mobile App Development
    • Design Services
    • Software Development
    • Web Development
    • Staff Augmentation
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    33 Projects Listed

    Kevych Solutions Services

    • Mobile App Development
    • Design Services
    • Software Development
    • Web Development
    • Staff Augmentation
    • AI Development
    • Web Design
    • IT Services
    • VR/AR
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • eSIMo
    • GrowthBook
    • Holodex
    • Silo
    • Posted
    • Fara
    • Weanie
    • OffLesson
    • Spill
    • NetBird
    Data sourced from the agency's DesignRush profile

    Kevych Solutions Reviews & Testimonials

    • Vasco Rouw
      Vasco Rouw Founder at Mavelli
      5.0★

      Mobile App Development Review from Vasco Rouw

      Weve been working with Kevych Solutions full-time for over a year, and the experience has been excellent. They handle the complete end-to-end development of our AI-powered mobile apps, including UI/UX, frontend and backend development, AI integrations, infrastructure, deployment, and ongoing support.What stands out most is the extremely high level of their technical expertise and execution quality. They actively use AI and modern development workflows to maximize efficiency and deliver results quickly. The team is highly responsive, proactive, and always goes the extra mile to meet deadlines.Since working together, we scaled from 0 to over 100,000 subscribers in just 8 months, and our apps are now generating more than $1M in monthly revenue. Whenever challenges came up, we solved them together efficiently, and Kevych Solutions continuously adapted and grew alongside our projects.We highly recommend them to anyone looking for a reliable, high-level mobile app development partner.

    • Alex Kayaian
      Alex Kayaian Founder at Inbox Zapper
      5.0★

      Mobile App Development Review from Alex Kayaian

      Kevych was amazing to work with, and an integral part of our team. They delivered on time, with high quality, and consistent communication. You can't ask for a better partner when developing a project.

    • Lucas Chatham
      Lucas Chatham CEO at Daybreaker Health
      5.0★

      Mobile App Development Review from Lucas Chatham

      I had an excellent experience working with this engineering firm to build a React Native app. Oleg and Ihor were exceptional software engineerstheir technical skills were top-notch, and they consistently delivered clean, well-structured code on time.What really set this team apart was Volodymyr, their CTO. He was incredibly hands-on, maintaining clear and frequent communication throughout the project. He was always responsive and proactive in managing the work, which made the entire process smooth and stress-free.The team was professional, reliable, and genuinely committed to quality. They understood my requirements and provided valuable input that improved the final product. Highly recommend this firm for anyone seeking skilled developers and excellent project management!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Strategic Technology Partner for Custom Software & Mobile Development

    Techstack is a strategic technology partner with 10+ years of expertise in mobile and custom software development. We build, scale, and evolve high-quality digital products through strong engineering culture, transparency, and long-term growth focus...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    • Web Design
    • AI Development
    • Show more
    Location
    Wroclaw, Poland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    24 Projects Listed
  • AI-enabled Engineering Teams | long-term software development partner for clients across the US, AU

    Shinetech is a long-term software development partner for clients across the US, Australia, and Europe specializing in AI-enhanced dedicated developers, legacy modernization, and custom software development...

    Top Services:

    • Software Development
    • Staff Augmentation
    • AI Development
    • DevOps Consulting
    • Mobile App Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    250 - 499
    Average Hourly Rate
    $30/hr
    Portfolios Count
    6 Projects Listed
  • Award Winning Custom Development Experts | ERP Integration | Shopify/BigCommerce

    QOLOS (pronounced "koh-lohs") is a U.S.-based software development company, specializing in building custom, high-performance digital solutions for brands that demand innovation. From complex ERP integrations to e-commerce solutions - you are in good hands with QOLOS...

    Top Services:

    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • UI/UX Design
    • Software Development
    • Show more
    Location
    Green Bay, Wisconsin
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $50,000 & Up
  • Your links to the world of I.T | Custom Software Development Company

    Linkitsoft is a custom software development company offering vending machine software, kiosk software, touchscreen solutions, mobile apps, web development, AI, UI/UX, backend development, and integrations...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • IoT
    • CRM Consulting
    • Show more
    Location
    Austin, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Portfolios Count
    14 Projects Listed
  • The undisputed authority on BLE Bluetooth IoT and AI App Development

    We are the undisputed authority on Bluetooth BLE, IoT, and AI applications. Our Bluetooth and AI applications have proven to be very effective to clients across the United States and Europe. Call us for a free technical consultation and evaluation of your project...

    Top Services:

    • Mobile App Development
    • Web Development
    • AI Development
    • Software Development
    • Product Design
    • Show more
    Location
    Westport, Connecticut
    Number of Employees
    50 - 99
    Portfolios Count
    16 Projects Listed
  • Software Development for NASDAQ & NYSE Listed Companies and Fast-growing Startups

    Product engineering partner for USA startups and enterprise teams (incl. NASDAQ/NYSE). Build web & mobile apps ~30% faster at ~40% lower cost. ISO 9001:2015 + ISO/IEC 27001:2022 certified for quality and security. +1 (505) 464-6100...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • IT Services
    • Show more
    Location
    Thiruvananthapuram, India
    Number of Employees
    250 - 499
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    22 Projects Listed
  • Recommended by 96% CEO, CTO and COO Globally

    At SPEC INDIA, we are Empowering businesses with AI in the digital world. With more the 36+ years of experience in the tech space we have been delivering bespoke software solution that power businesses worldwide. Our commitment and assurance of quality makes us stand out in the market....

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • Software Testing
    • Show more
    Location
    Ahmedabad, India
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    54 Projects Listed
  • Exoft is a software house with a significant background in web and mobile development.

    Exoft is a custom software development company that provides solutions to address various business needs...

    Top Services:

    • Software Development
    • Web Development
    • Software Testing
    • Cybersecurity
    • IT Services
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
  • Engineering for live products where mistakes are expensive.

    KITRUM is an engineering partner focused on building on top of live software products. We help them grow beyond their original design by modernizing architecture, adding new capabilities, and scaling systems without disrupting what already works...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • IT Services
    • AI Development
    • Show more
    Location
    Miami, Florida
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    11 Projects Listed
  • AI is easy. Systems are hard. We build systems.

    AI is easy. Systems are hard. We build systems...

    Top Services:

    • Software Development
    • AI Development
    • Staff Augmentation
    • Cloud Consulting
    • Software Testing
    • Show more
    Location
    Vilnius, Lithuania
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    20 Projects Listed
  • A Versatile Tech Company!

    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
    • Show more
    Location
    Houston, Texas
    Number of Employees
    250 - 499
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed
  • Experts at Your Service

    Alt Digital Technologies is a B2B service provider servicing end to end development, DevOps, Testing and e-commerce solutions for your business. We work efficiently in ATG, Java, React, Salesforce, WordPress and majorly all technologies...

    Top Services:

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • Software Development
    • Software Testing
    • Show more
    Location
    Florida City, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed
  • Blockchain | Web3 | Software development

    Solicy is a blockchain software development company that provides innovative solutions, including Custom Software Development, dApps, DeFi Solutions, Smart Contracts, Mobile Apps, and AI Solutions. We help businesses drive growth and achieve success through cutting-edge technology...

    Top Services:

    • Blockchain
    • Software Development
    • AI Development
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    Yerevan, Armenia
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
  • Appikr Labs Leading Mobile App Development Company

    Appikr is the top choice for app development worldwide. We've eliminated decision-making dilemmas for countless clients by creating outstanding apps tailored to their business needs. With a track record of delivering over 500 high-performing apps across the globe, we continue to lead in the UK, US, UAE...

    Top Services:

    • Blockchain
    • Software Development
    • Software Testing
    • Mobile App Development
    • eCommerce Development
    • Show more
    Location
    Dubai, United Arab Emirates
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    44 Projects Listed
  • SoloWay - your sustainable digital transformation companion!

    We build custom software solutions that drive business growth, scale operations, and transform ideas into powerful digital products. Our main mission is to be a catalyst for successful transformation...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • eCommerce Development
    • Show more
    Location
    Ivano-Frankivsk, Ukraine
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    37 Projects Listed
  • Deep tech expertise for SME

    Light IT provides the following services on the global tech market:- consulting clients on IT products and services- custom product and software development- provision of resources at the clients' request- software delivery and maintenance- software quality assurance...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Software Testing
    • IT Services
    • Show more
    Location
    Rickmansworth, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
  • Data Science with Purpose, Innovation with Impact.

    Sigli is a forward-thinking software development firm specializing in Digital Product Development and Transformation. Certified under ISO/IEC 27001, we ensure top-tier information security. "Data Science with Purpose, Innovation with Impact" defines our mission to deliver high-quality, scalable digital...

    Top Services:

    • AI Development
    • Software Development
    • Staff Augmentation
    • CRM Consulting
    • ERP Consulting
    • Show more
    Location
    Antwerp, Belgium
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Top Software, Web & App Development Company in UK

    Vrinsoft is a leading Mobile & Web Development Company in London, UK, driving digital transformation for businesses of all sizes, from SMEs to large enterprises in industries like finance, logistics, healthcare, and e-commerce. We have demonstrated a history of success transforming ideas into action...

    Top Services:

    • Mobile App Development
    • Web Development
    • Web Design
    • Software Development
    • Blockchain
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    10 Projects Listed
  • Reliable Web & Mobile App Development Company

    Relia Software is Vietnam based software development company, building scalable and reliable apps for startups and enterprises since 2011...

    Top Services:

    • Web Design
    • Mobile App Development
    • Software Development
    • Web Development
    • IT Services
    • Show more
    Location
    Ho Chi Minh, Vietnam
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Product Engineering | Intelligent Automation & AI Adoption

    Gera-IT is a digital studio established in 2006.We develop fantastic apps to help businesses become more profitable and cost-effective...

    Top Services:

    • Software Development
    • IoT
    • Staff Augmentation
    • AI Development
    • Mobile App Development
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    25 Projects Listed
  • Enabling Your Digital and AI Transformation

    ZAPTA Technologies is a global technology partner helping startups and SMEs build, scale, and modernize software products through digital and AI innovation. We deliver secure, performance-driven platforms designed to grow with the business...

    Top Services:

    • Software Development
    • Web Design
    • Web Development
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    Austin, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed
  • Powering the IoT Revolution

    CitrusDev is a team of experts with a general focus on the Internet of Things (IoT) project development. Our team's key points of interest are Smart Home, Smart City, Smart Farm, Automotive, Healthcare, and Indoor navigation domains. We cover the Hi-tech, Retail, Fintech, and Education industries as well...

    Top Services:

    • IoT
    • Web Development
    • Mobile App Development
    • Wearables
    • WordPress Website Design
    • Show more
    Location
    Kyiv, Ukraine
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    7 Projects Listed
  • Bintime

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Strategy That Ships Continuity That Lasts

    Bintime is a Netherlands-based custom software development and AI company that helps data- and object-heavy companies in manufacturing, distribution, logistics, energy, and retail turn complex operational data into working AI and software. With 20+ years of experience, 100+ engineers across Europe...

    Top Services:

    • eCommerce Development
    • AI Development
    • Mobile App Development
    • Software Development
    • ERP Consulting
    • Show more
    Location
    Nieuwegein, Netherlands
    Number of Employees
    100 - 249
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • IT Craft has been building software since 2001, delivering reliable, scalable solutions for startups, SMBs, and enterprises. Our team handles everything from discovery and architecture to deployment and maintenance...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • IT Services
    • Staff Augmentation
    • Show more
    Location
    Berlin, Germany
    Number of Employees
    250 - 499
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed
  • Software Engineering Laboratory

    SENLA is the leading provider of Talent Augmentation in Europe, with a team of 700+ tech experts. Trusted by BOSCH, IKEA, Bayer, and Deloitte, we help scale tech teams with skilled engineers, architects, and data scientists...

    Top Services:

    • Staff Augmentation
    • Mobile App Development
    • Software Development
    • CRM Consulting
    • UI/UX Design
    • Show more
    Location
    Warsaw, Poland
    Number of Employees
    500 - 999
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    38 Projects Listed
  • Building AI-powered Custom Software Since 2017

    A tech partner for those who want to innovate. Get access to top software engineers, kickstart your project, and start building your success story...

    Top Services:

    • Software Development
    • AI Development
    • Mobile App Development
    • Product Design
    • Web Design
    • Show more
    Location
    Gdansk, Poland
    Number of Employees
    50 - 99
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    13 Projects Listed
  • AI & ML | App Development | Data Engineering

    Wednesday is a leading Product Engineering Agency. We have worked with over 50 Global Brands.Y-Combinator & Sequoia funded startups, unicorns, and listed enterprises have worked with Wednesday for some of their most challenging engineering, product, and design needs...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Product Design
    • AI Development
    • Show more
    Location
    Pune, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed
  • SCALO

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    Software Development / AI & Technology Consulting / Dedicated Developers

    Scalo is a software and AI development company based in Poland. We build custom software and help companies adopt AI through consulting and dedicated AI engineering teams. Client reviews point to one thing: dependable delivery, backed by almost 20 years in the market and 750+ completed projects...

    Top Services:

    • Software Development
    • Staff Augmentation
    • Software Testing
    • IT Services
    • UI/UX Design
    • Show more
    Location
    Wroclaw, Poland
    Number of Employees
    500 - 999
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    7 Projects Listed

    SCALO Services

    • Software Development
    • Staff Augmentation
    • Software Testing
    • IT Services
    • UI/UX Design
    • Mobile App Development
    • AI Development
    • Big Data Analytics
    • Managed Services
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Asseco
    • ING
    • Change Donations
    • BNP Paribas
    • Onet
    • Santander
    • Volvo
    • Crif
    • Bitpanda
    • Vodeno
    Data sourced from the agency's DesignRush profile

    SCALO Reviews & Testimonials

    • Artur Bukowski
      Artur Bukowski IT Director at CRIF
      5.0★

      Software Development Review from Artur Bukowski

      The collaboration with Scalo is quite valuable to us. They enhance our development capabilities. Most of the people from Scalo have been working with us for a long time, which indicates that we’re satisfied with the collaboration.

    • Katarzyna Wieczorek
      Katarzyna Wieczorek Recruitment Manager at HRS
      5.0★

      Staff Augmentation Review from Katarzyna Wieczorek

      We know that Scalo is a good partner for companies which want to scale up their software development teams fast. They got great understanding of business needs, deliver experienced specialists, and know-how to build IT team in no time.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Full-cycle agency that turns ideas into reality.

    A software development company that provides solutions for maximizing profits and converting clients ideas into reality...

    Top Services:

    • Software Testing
    • Web Development
    • Mobile App Development
    • UI/UX Design
    • Design Services
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    100 - 249
    Minimal Budget
    $1,000 - $10,000
  • Software Design / Development / Support & Enhancement

    60+ projects turned from ideas into powerful IT solutions. We help you grow, optimize, and cut costs with impactful web&mob apps,fueling your success...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • Software Testing
    • Show more
    Location
    Tbilisi, Georgia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    12 Projects Listed
  • Complex Systems Implementation

    Chudovo: A nearshore software development leader with offices in Cologne, Kyiv, NY, Tallinn, and London. Specializing in healthcare, finance, and more. Innovative, domain-focused solutions...

    Top Services:

    • Software Development
    • IT Services
    • eCommerce Development
    • AI Development
    • Mobile App Development
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Portfolios Count
    98 Projects Listed
  • Come as a client, Stay as a friend

    We build custom digital products that drive business results, combining strong technical delivery with a deep understanding of business needs. Our team adapts to your working style and helps you make smart technical decisions, speaking a language you'll understand...

    Top Services:

    • Mobile App Development
    • Web Development
    • Product Design
    • Software Development
    • IT Services
    • Show more
    Location
    Krakow, Poland
    Number of Employees
    Under 49
    Average Hourly Rate
    $46/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    6 Projects Listed
  • We integrate, innovate, and elevate enterprise systems.

    Intellectsoft builds custom software, AI solutions, and dedicated engineering teams for enterprises and fast-growing businesses across the US and UK...

    Top Services:

    • Software Development
    • Mobile App Development
    • Wearables
    • Software Testing
    • Blockchain
    • Show more
    Location
    New York City, New York
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed
  • AI-Native Software Development: Modernize, Scale, Build

    Brocoders is an AI-native software development company from Estonia. We modernize,scale and maintain the software businesses run on, and build new products from scratch.Audit first when the system already exists, AI-ready by the end...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • UI/UX Design
    • AI Development
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    29 Projects Listed
  • Enterprise AI Solutions | Scalable . Flexible. Sustainable

    Seasia Infotech is a global AI-powered digital engineering company with 25+ years of experience delivering custom software, AI solutions, cloud applications, mobile apps, and enterprise platforms. We help businesses accelerate innovation, improve efficiency, and drive digital transformation...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Big Data Analytics
    • Show more
    Location
    Emeryville, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    65 Projects Listed
  • Since 2002 in the software development business. Companies from 27 industries choose us.

    With over 20 years of industry experience, Gecko Dynamics is a trusted partner for startups and enterprises. Our team delivers end-to-end solutions using Java, Angular, Flutter, and AWS. From ideation to post-launch support, we're dedicated to driving progress for our clients across industries...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Staff Augmentation
    • IT Services
    • Show more
    Location
    Krakow, Poland
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Portfolios Count
    11 Projects Listed
  • Full-Cycle Software Development Boutique

    Bamboo Agile is a software development company with an office in Tallinn (Estonia)...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
  • Developing Partnerships

    At Kaizen Softworks, were here to make your business thrive with custom software solutions. Our team is a blend of skilled designers, software engineers and scrum masters who are dedicated to transforming your business challenges and ideas into effective software solutions...

    Top Services:

    • Mobile App Development
    • Software Development
    • Software Testing
    • UI/UX Design
    • IoT
    • Show more
    Location
    Boston, Massachusetts
    Number of Employees
    50 - 99
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $25,000 - $50,000
  • We Empower Businesses Through Technology.

    Saritasa is a leading custom software development company offering a wide range of services, including mobile development, web development, AR/VR development, IoT solutions, DevOps, custom development, and database development...

    Top Services:

    • Software Development
    • Mobile App Development
    • VR/AR
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $130/hr
    Portfolios Count
    5 Projects Listed
  • AI-Native Engineering and Solutions Company

    Quokka Labs is an end-to-end AI-native engineering and solutions company helping startups, enterprises, and government institutions build, modernize, and scale intelligent digital products...

    Top Services:

    • Mobile App Development
    • Web Design
    • Web Development
    • eCommerce Development
    • IoT
    • Show more
    Location
    Austin, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    37 Projects Listed
  • Together, beyond expectations

    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
    • Show more
    Location
    Lviv, Ukraine
    Number of Employees
    500 - 999
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed
  • Your AI-Powered Engineering Partner

    Liquid Technologies automates enterprise operations using AI, custom software, and data engineering. We work with healthcare, manufacturing, logistics, and regulated industries to replace manual workflows with intelligent automation...

    Top Services:

    • AI Development
    • Software Development
    • IoT
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    Houston, Texas
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    19 Projects Listed
  • Excellent people creating excellent software

    We are Aleph Engineering, and our mission is to build outstanding software with wonderful people. Get started cooperating with us, transform your project ideas into successful ones, and have a fantastic time doing it all in the process...

    Top Services:

    • UI/UX Design
    • Software Development
    • Web Development
    • eCommerce Development
    • Software Testing
    • Show more
    Location
    Hanover, Germany
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
129,387+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
153

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

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. 

Core services include: 

How much do software testing services cost?

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.  

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.   

Special software testing services such as QA audit goes from $5,000 to $25,000. 

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:  

  • Core functionality issues: Use functional testing to verify features work as expected 
  • Unstable code or new features: Use unit testing for individual components and integration testing for modules working together 
  • Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing features 
  • Performance and load issues: Use performance and load testing to evaluate speed and scalability 
  • Security issues: Security and penetration testing are commonly used across apps handling sensitive user data 
  • Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end users 
  • Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versions 

There is also the option to choose between manual and automated testing.  

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.  

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. 

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.  

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. 

How do businesses measure the effectiveness of software testing?

The effectiveness of the software testing is measured via: 

  • Code coverage: The percentage of the code that has been tested 
  • Defect density: The number of defects found per unit of code 
  • Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective tests 
  • Time to detect and fix defects: The time it takes to identify and fix software defects and software bugs 
  • Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase