Top 7 Outsourced QA Companies in 2025

Testlio

June 30th, 2025

Internal teams are often stretched thin. While automation helps, it can’t cover every edge case, especially across devices, languages, or compliance zones.

That’s why more companies treat outsourced QA as a strategic enabler: It allows fast-moving engineering teams to bring in specialized talent without the hiring overhead.

And the data backs it up:

According to the Global Growth Insights, 60% of global organizations outsource their testing processes to reduce in-house operational costs and improve software quality

If you’re scaling your QA or starting from scratch, your most important question isn’t “should we outsource?”. It should be:

• Who can we trust?
• What do they specialize in?
• Which QA partner fits the way our team works?

That’s exactly what this guide is here to help with. We’ve compiled a list of the Top 10 outsourced QA companies in 2025, based on:

• Breadth of services (manual, automation, performance, security testing)
• Industry experience and team expertise
• Real-world results and client feedback
• Scalability and global delivery

Whether you’re a startup building your first automated test suite or an enterprise rolling out CI/CD across regions, this guide will help you make a more intelligent decision, with fewer surprises down the line.

TL;DR:

• Why Outsource QA: Speed up releases, reduce hiring overhead, get expert coverage across devices, time zones, and compliance needs.
• Top QA Partners:
  • Testlio: Scalable, mobile-focused managed crowdsourced QA
  • Applause: Real-world crowdtesting
  • Cigniti: Enterprise testing at scale
  • Qualitest: AI/ML and digital QA
  • ImpactQA: Cost-effective, flexible QA
  • TestFort: Secure QA for sensitive apps
  • DeviQA: Fast automation + dashboards
• What to Prioritize:
  Scalability, industry fit, clear reporting, proven results.

Table of Contents

• Why Companies Outsource QA in 2025
  • Keeping Pace Without Cutting Corners
  • Affordable Access to Skilled QA Engineers
  • Domain Expertise You Can Plug In
  • Infrastructure Without the Investment
  • Testing That Happens While You Sleep
  • Flexibility When You Need It Most
• Quick Checklist: Is It Time to Outsource QA?
• Top 7 Outsourced QA Companies (2025 List)
  • 1. Testlio
  • 2. Applause
  • 3. Cigniti
  • 4. Qualitest
  • 5. ImpactQA
  • 6. TestFort
  • 7. DeviQA
• Final Considerations Before Choosing
  • Make Sure Their Expertise Matches Your Needs
  • Check If They Can Scale With You
  • Look for Clear Communication and Real-Time Visibility
  • Ask for Proof of Quality and Consistency
  • Confirm Their Approach to Security and Compliance
  • Focus on Value, Not Just Cost
  • Consider Time Zone Compatibility and Collaboration Style
• Final Thoughts

Why Companies Outsource QA in 2025

Software quality is no longer just a technical checkbox. It is a business-level concern that directly impacts user trust, product adoption, and revenue. 

Faster releases and richer feature sets have made it difficult for developers to maintain software stability, security, and performance in-house. 

Here’s where outsourced QA aligns speed, complexity, and scale.

Keeping Pace Without Cutting Corners

Modern development is built on speed. Agile workflows, continuous delivery, and frequent deployments are now standard, but that speed often comes at the cost of testing depth. 

Outsourced QA helps solve this by adding capacity when and where needed. External teams run tests in parallel with your dev cycle so you can ship faster without risking regressions or technical debt.

Affordable Access to Skilled QA Engineers

Hiring full-time QA engineers, especially ones with specialized skills, such as test automation or performance tuning, can take longer. 

Outsourcing offers a shortcut to that talent. A global team of experienced testers can start right away, often at a fraction of the cost of building the same capability in-house.

Domain Expertise You Can Plug In

A good QA partner doesn’t just test, they understand your industry. You can benefit from domain-specific expertise from leading vendors, whether you are in finance, healthcare, SaaS, or mobile apps. 

Many also offer ready-made frameworks for cross-device testing, accessibility validation, and AI model verification.

Infrastructure Without the Investment

Running effective QA takes more than people. You also need tools, environments, device labs, CI integrations, and performance monitoring. 

Building that internally can be expensive and slow. Most outsourced QA teams bring this infrastructure, fully operational and ready to scale.

Testing That Happens While You Sleep

Testing doesn’t have to stop when your engineering team logs off for the day. With globally distributed QA teams, defects can be found and logged overnight, so fixes are already in motion by morning. 

This round-the-clock coverage shortens feedback loops and helps maintain momentum between sprints.

Flexibility When You Need It Most

Product roadmaps change, releases get moved up, and markets expand. Outsourced QA allows you to scale quickly when priorities shift without reshuffling your internal team. 

With external partners, you can ramp up for a launch or temporarily increase test coverage on the fly.

Quick Checklist: Is It Time to Outsource QA?

The following checklist can help you determine if you should bring in an outsourced QA partner right now:

If you’re checking several of these boxes, you’re not alone. Many teams reach this point as they grow, scale features, or prepare for bigger releases. 

The goal of outsourcing QA isn’t to lose control, but rather to get the coverage, skills, and stability you need to build and release confidently.

Top 7 Outsourced QA Companies (2025 List)

1. Testlio

Best for: Enterprise-grade mobile apps, global coverage, and managed QA services

Testlio is one of the most recognized names in outsourced QA. Built around a managed services model, they combine expert testers from over 150 countries with a flexible platform and dedicated QA leadership. 

The result is a scalable, hands-on approach that works particularly well for companies with mobile-first products or global user bases.

Founded in 2012, Testlio has supported QA for some of the world’s most recognized brands, including Microsoft, Netflix, SAP, CBS, and the NBA. 

Services include:

• Manual, exploratory, functional, regression, API, accessibility, and payments testing across platforms and devices
• Mobile-first testing with real-user and real-device reporting; AI-powered automation with no-code and scripted options
• Localization, usability, customer journey, voice, AR/VR, and stream testing
• Fully managed QA teams, including strategic consulting, onboarding, and continuous cycle planning

What makes Testlio stand out is the way it integrates with internal teams. You get a dedicated QA lead who handles everything from test planning to results reporting, with full visibility through real-time dashboards and Jira integration. 

Testlio also brings strong infrastructure and tooling, and is ISO/IEC 27001:2022 certified. They’re especially well-suited for:

• Enterprises that need scalable QA without building a large in-house team
• Mobile app companies targeting multiple regions, devices, and languages
• Product teams looking for proactive QA leadership, not just test execution

With a 4.7-star average on G2 (based on 70+ verified reviews), Testlio earns consistent praise for communication, quality, and overall reliability. 

2. Applause

Best for: Real-world usability and crowdtesting at scale

Applause offers real-world QA at scale through a global community of over one million testers. Their crowdsourced model makes them a strong choice for customer-facing apps that must be validated across devices, regions, languages, and demographics.

With deep coverage in real-world conditions, Applause is a strong fit for teams launching in new markets or looking to surface usability issues that traditional QA may miss. 

Test cycles are fast and flexible, helping teams get quick feedback from users who closely resemble their actual customers

Applause supports functional, usability, localization, payments, and voice testing. However, not all testers are professional QA engineers. Many are real users from the general population, which adds authenticity but can introduce variability in execution quality compared to managed QA models.

3. Cigniti

Best for: Enterprises needing broad testing services and domain expertise

Cigniti is one of the most established names in enterprise QA, with a global team of over 4,000 professionals and deep expertise across industries. 

They offer a full suite of services, including test automation, performance engineering, and AI-powered QA analytics.

Their domain strength stands out in BFSI, healthcare, and retail, where compliance, security, and scale are critical. 

Cigniti is a strong fit for enterprises that need structured, end-to-end QA with the ability to integrate across complex environments.

4. Qualitest

Best for: AI/ML testing and digital transformation QA

Qualitest focuses on next-generation testing, with specialized services for AI, machine learning, and digital transformation initiatives. 

They help businesses validate complex systems from AI model behavior to automation pipelines and end-to-end customer experiences.

With a strong consulting practice and a presence across North America, Europe, and Israel, Qualitest combines technical execution with strategic QA guidance. 

They are a good choice for organizations looking to modernize their quality assurance approach.

5. ImpactQA

Best for: Mid-sized companies seeking cost-effective QA with flexible engagement models

ImpactQA is a cost-effective QA partner built for mid-sized companies that need flexibility, responsiveness, and dependable results. 

With teams based in the US and India, they offer a full range of testing services from manual and automation to performance and security testing tailored to fit varied budgets and timelines.

Their custom test frameworks and adaptable engagement models make them a strong fit for growing teams that want reliable QA without enterprise-level complexity. 

Clients often highlight their fast onboarding, clear communication, and ability to scale up or down as project needs shift.

6. TestFort

Best for: Dedicated QA teams and secure software testing

TestFort, part of the QArea Group, provides dedicated QA teams with a strong emphasis on secure software testing and process transparency. 

Their ISTQB-certified engineers support manual and automated testing, following secure SDLC practices that make them a reliable choice for sensitive or high-compliance industries.

TestFort fits well with teams who require long-term QA support and high levels of security and quality. 

Their structured delivery approach and clear documentation also make them a favorite among engineering-led organizations.

7. DeviQA

Best for: Fast test automation and transparent reporting

DeviQA is a strong automation-focused QA partner, known for helping SaaS companies rapidly build and maintain robust test suites. 

Their strength lies in fast onboarding, scalable automation frameworks, and real-time visibility into test results. They are an excellent fit for dev teams that want complete transparency and minimal QA overhead.

Their dashboard-driven approach gives engineering and product teams a clear view of test coverage, defect trends, and release readiness without slowing the development cycle. 

Whether starting from scratch or optimizing an existing test suite, DeviQA helps accelerate automation without compromising quality.

Final Considerations Before Choosing

Choosing an outsourced QA company is not just about filling a gap in your testing process. A good team understands your goals, fits into your workflow, and helps you deliver better software with fewer surprises. 

Before you decide, here are the areas that deserve your attention.

Make Sure Their Expertise Matches Your Needs

Not every QA team is built the same. Some specialize in mobile testing, while others focus on APIs, compliance, or localization. 

The right partner will bring experience that maps directly to your product and platform.  If you build in a regulated space like finance or healthcare, domain-specific knowledge becomes even more critical.

Check If They Can Scale With You

Your testing needs will change. Some releases are light, while others are heavy and time-sensitive. 

A good QA partner can scale their resources based on your sprint schedule and release cadence. 

You should not have to start from scratch whenever your roadmap picks up speed.

Look for Clear Communication and Real-Time Visibility

The best QA teams keep you informed, not guessing. Prioritize vendors who offer structured communication, regular check-ins, and access to dashboards or test reports. 

You should be able to see what is happening during each cycle without chasing down updates. 

A dedicated QA lead or engagement manager is a sign that they take accountability seriously.

Ask for Proof of Quality and Consistency

You want more than a team that can write test cases. You want one that catches real issues, avoids false positives, and improves over time. 

Ask for case studies, past client references, or a short pilot. You can learn much more from a proven track record than from a capability list.

Confirm Their Approach to Security and Compliance

Security is not optional if your product handles user data, payments, or private content. 

Depending on your industry and location, make sure your QA partner follows best practices for data protection and complies with standards like ISO 27001, SOC 2, GDPR, or HIPAA.

Focus on Value, Not Just Cost

Outsourcing QA to save money can work, but only if quality holds up. 

A great partner will reduce bugs in production, accelerate releases, and help you avoid costly issues down the line.

That long-term value makes the investment worthwhile, even if the upfront cost is higher than the lowest bid.

Consider Time Zone Compatibility and Collaboration Style

Fast feedback depends on overlapping hours and a shared way of working. 

Ensure your QA team is available for at least part of your workday and that their collaboration style matches your internal team’s. 

Smooth handoffs and quick responses are essential, especially in Agile environments.

Final Thoughts

Outsourcing QA is a strategic way to enhance testing capabilities, improve product quality, and manage costs. 

As you evaluate providers, it’s essential to consider the services offered and how well a partner can align with your project’s specific needs and working style.

Among the leading outsourced QA companies in 2025, Testlio is notable for its combination of a global network of skilled testers, a strong focus on mobile testing, and a managed service model. 

This combination allows them to support various testing requirements, from functional and exploratory testing to localization and API validation.

While every company on this list brings unique strengths, Testlio’s approach is well-suited for organizations looking for a flexible, scalable, and strategic QA partnership, especially those with complex mobile applications or diverse device testing needs.

Ultimately, the best choice will depend on your project’s priorities and goals, but Testlio remains a solid option for comprehensive, managed QA services.