Stelo Technology

10 of the Top Software Testing Companies

Software testing companies

In an increasingly digital world, almost every business runs on software in some capacity—from online retail and restaurants to financial institutions and streaming devices. Software impacts the daily lives of customers in ways that most take for granted. . . that is until that software fails.

A 2017 study by Tricentis found that a collection of just 606 software bugs caused $1.7 trillion in losses. And that doesn’t even factor the damage to reputation!

To avoid software failures, companies have made it a priority to integrate robust software testing into their workflow. Software testing services not only ensure a seamless flow in software function, but they also make sure the user experience is improved.

This article will discuss some of the factors involved in choosing the right software testing partner for your company. We will consider 10 top software testing companies along with what they can offer you.

In our research, we looked at dozens of software testing companies located across the globe. While many had locations listed in the U.S., a majority of those companies operated mostly in offshore countries which can sometimes pose a challenge with time zones and language. With that in mind and with respect to transparency, we have provided criteria that is vital in selecting a testing company.

In no particular order, we have included companies and their profile specifics including, years of experience, location, and core services. While there is no hierarchy in the list, we are confident that QualityLogic tics all of the boxes with headquarters right here in the United States.

Top 10 Software Testing Companies

Top 10 Software Testing Companies
Stelo Technology 

Core Services: Test Automation, Manual Testing, API Testing, Functional Testing, Usability Testing, Accessibility Testing, WCAG Compliance Testing and Certification, Load and Performance Testing, Regression Testing, Exploratory Testing, and DevOps services with dedicated testing teams and customizable solutions.

About: Stelo Technology serves to help organisations like yours enjoy the benefits of a full QA/PM/BA department without the associated setup cost and hassle. With an emphasis on time-bound delivery and quality solutions, we excel at supporting our partners manage the quality of their deliverables within Scope, Time & Quality while keeping the cost low.

Onshore Testing: Yes. 100% onshore. All testers, management, and facilities are in the USA & India.


Core Services: Automated testing, Mobile Testing, Performance Testing, Functional Testing, API Testing, Web Testing, Full Cycle Testing.
About: DeviQA is a software testing company providing test automation for mobile and web apps as well as QA audits and consulting QA outsourcing, and dedicated QA teams. DeviQA applies the latest testing methods in practice and guarantees outstanding software product quality.

Onshore Testing: No. Operations based in Ukraine.


Core Services: AI Testing, Blockchain Testing, Test Automation, Security Testing, Regression Testing, Performance Testing, Functional Testing, Compatibility Testing, Crowdsourced Testing
About: Cigniti is a quality engineering & software testing services company, offering independent quality engineering and a wide range of software testing services for enterprises and ISVs. Cigniti has locations worldwide and a Testing Center of Excellence, world-class software testing Labs that deliver Quality Engineering, Quality Assurance, and Digital Assurance.

Onshore Testing: No. Operations based in India.


Core Services: Cybersecurity, API Testing, Functional Testing, Usability Testing, Performance Testing, Regression Testing, Compatibility Testing, Localization Testing
About: A1QA is a software testing company that has been in service for more than 15 years. The company has locations in Colorado (US), London (UK), Lelystad (NL), and Minsk (BY), and considers itself a technology company, specializing in the delivery of full-cycle QA and application testing services.

Onshore Testing: No. Operations based in Belarus.

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Core Services: Automation Testing, API Testing, Functional Testing, Mobile Testing, Salesforce Testing, DevOps Services.
About: QASource is a leading software engineering and QA testing services company. With a team of over 800 engineering experts located in both offshore and nearshore locations, it has been providing software testing services to help Fortune 500 companies and startups since 2002. QASource helps organizations develop modular, portable, maintainable, and reusable automation frameworks.

Onshore Testing: No. Operations based in India.


Core Services: Web Testing, Mobile Testing, Accessibility Testing, Load Performance Testing, Automated Testing, Localization Testing, Game Testing, Functionality Testing, Biometrics Testing
About: iBeta has been providing software testing services since 1999 and is Headquartered in Denver, Colorado. Their testing facilities can handle a variety of software architectures such as simple web-based applications, stand-alone software packages, and complex client-server architectures.

Onshore Testing: Yes. 100% onshore. All testers, management, and facilities are in the USA.


Core Services: AI-based Testing, Performance, and Load Testing, Usability Testing, Security Testing, Regression Testing, Digital, Web and Mobile Testing, API Testing, Web Accessibility Testing, IoT and Cloud Testing, DevOps Services
About: TestingXperts (Tx) is a QA & software testing services provider headquartered in London with test labs across the US, Europe, and offshore test labs in India. TestingXperts’ comprehensive suite of testing services covers Test Advisory, Functional and Non-Functional testing specializing in Automation, Digital, DevOps, Agile, Web, Mobility, AI/ML, RPA, Blockchain, IoT, and Big Data.

Onshore Testing: No. Operations based in India.


Core Services: Software Development, UI/UX Design, QA Outsourcing, Manual Testing, Managed Testing, DevOps, Test Automation.
About: Headquarters in McKinney, TX, US, with European offices in Vantaa, Finland, and a delivery center in Minsk, Belarus, and in the UAE. ScienceSoft provides a range of services to help businesses establish QA processes and ensure high quality of software. ScienceSoft has developed expertise in CRM, ERP, eCommerce, Data Analytics, Information Security, DMS, and other areas and conquered such innovative fields as Artificial Intelligence and Machine Learning, Big Data, Internet of Things, Computer Vision, and Augmented and Virtual Reality.

Onshore Testing: No. Operations based in Belarus.

Ready to enhance your software quality and accelerate your time to market? Contact us today at to request a customized quote for your business!

QA Mentor

Core Services: Manual Testing, Automation Testing, Functional Testing, Security Testing
Founded in 2010 and based in New York, QA Mentor, Inc. is a multi-award winning, CMMI Level 3 SVC + SSD v1.3 appraised ISO 27001:2013, ISO 9001:2015 and ISO 20000-1 certified leading independent software testing company offering manual test design and execution services.

Onshore Testing: No. Operations based in India.

Mindful QA

Core Services: Manual Testing, Automated Testing, API Testing, Performance Testing
About: Based in the United States, Mindful QA is an experienced software testing company providing QA testing, user experience, and Agile consulting for over 100 clients for websites and mobile apps across all major industries, including healthcare, education, media, digital agencies, non-profits, start-ups, and many more.

Onshore Testing: Yes. 100% onshore. All testers and management are in the USA.


Core Services: Manual Functional Testing, Automated Functional Testing, Low-Code/No-Code Automation, UX Testing, Voice Testing, Payment Testing, Accessibility Testing, Security Testing
About: Applause is a leader in distributed, remote & at-home digital testing. If you are currently testing in a lab or offshore, we’re ready to partner with you during this complex time to help ensure that you continue to deliver flawless digital experiences to your customers.

Onshore Testing: Global crowdsourced testing with coverage in USA.


Core Services: Web Mobile, VR/AR App Development, Software QA and Testing
About: As a software development company, Solvd prioritizes start-up tech companies aiming to assist them in creating and developing products that are in high demand by the market and by users. The company’s focus is on mobile solutions, web app development, and QA. Starting as a QA company Solvd has gathered experience from hundreds of projects, brought up a team of battle-tested professionals, and developed advanced in-house testing infrastructure.

Onshore Testing: Yes. Operations based in Belarus, Ukraine, Argentina, and USA.

The QA Difference is Designed Around You

With so many choices, how do you choose the best software testing company? While many of our competitors offer similar services, QualityLogic works hard to align with not only your technical needs but your culture too.

Our approach is straightforward and starts with questions. We ask questions because it is our priority to understand as much about your company as possible before we design a customized software QA program that meets your goals. We stand out by integrating and connecting with our clients’ teams as true partners and stakeholders in their success.

The Stelo Technology Process Puts You First

  1. Requirements Gathering: Initial planning to determine the nature of the engagement at a high level. During this phase, we can define what needs testing, the depth of the testing, and the timeframe for the project.
  2. Scope Requirements and Skills: Our team conducts a thorough review of your software requirements to build a baseline for our proposal development. In this phase, it is our objective to determine the type of testing and the level of testing required, identify if automation is recommended, get insight into the number of test cases required for manual testing, and planning for the quality assurance skills needed to complete the testing effort.
  3. Formal Proposal: After assessing your requirements, we develop a formal proposal that describes the strategy. The estimate specifies which items are included in the scope of testing, the deliverables to be provided, the platforms we will be testing on, and the total cost estimate of the project.
  4. Establish Project Team: Once the proposal is approved, we make sure your QA testing project is fully staffed with the right people for the effort. Depending on the size of the project, your team will consist of members with diverse skill-sets and may include test techs, engineers, project lead(s) project manager(s). All QL team members are located in the USA.
  5. Kick-off: Once the team is established, we hold a kick-off meeting to discuss and verify several key components of the workflow including, roles and responsibilities, project timelines, deliverables, procedures, communications tools and flow, as well as defect reporting procedures.
  6. Testing: The project team cycles through the testing effort as defined in the proposal. Depending on the scope, your project may include test automation or functional, performance, compatibility, usability, and/or other testing tactics as defined by your goals. The testing process also includes these steps.
    • We meet regularly during the testing process to validate results and ensure the systems meet the pre-established requirements.
    • We provide you with continual reporting to allow for immediate test results and regression testing
    • We guarantee our work efforts, ensuring our clients are more than satisfied with the performance.
  7. Test Closure: While projects are often ongoing, if one comes to a close, we will deliver a final version of the test documents which included full defect and progress reports.

At Stelo Technology, we are passionate about helping companies release outstanding, high-quality software, and we stand behind our work 100%. We are so confident in our software testing services that we guarantee your engagement with us will be successful – or we will make it right at our expense.

We also understand outsourcing software testing can be a big undertaking that involves some initial mystery with existing software testing staff or developers, and so we are pleased to offer a pilot program so companies can experience how our software testing teams and solutions work

If you are ready to partner with the leading INDIA software testing company that brings flexibility, scalability, affordability, and guaranteed performance to your company, call us today. We’ll help your product quality problems and software testing bottlenecks disappear

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