Top Accessibility Testing Companies in 2025

In today’s digital landscape, web accessibility and usability are not just nice-to-have features — they’re business-critical imperatives. By ensuring WCAG compliance and ADA adherence, companies improve their user experience and widen their customer base, all while reducing legal and reputational risks. This article explores the top accessibility testing companies that excel in ADA compliance, Section 508 auditing, assistive technology support, and more. Their expertise helps organizations create inclusive digital products that accommodate people of all abilities.

Why Accessibility Testing Matters

1. Regulatory Compliance
   Websites and apps must comply with WCAG, ADA Title III in the U.S., and Section 508 (for government-related digital solutions). Failing to meet these standards can lead to legal action and fines.
2. Inclusive User Experience
   Accessible design benefits not only people with disabilities (e.g., visual, auditory, cognitive impairments) but also users on slow connections, older devices, or non-traditional input methods.
3. Brand Reputation & Reach
   A commitment to web accessibility enhances brand perception. You also widen your market by reaching an estimated 15% of the world’s population who have some form of disability.
4. SEO Benefits
   Many accessibility best practices (like proper heading structure, alt text, and label usage) also improve SEO, leading to better search engine visibility.
5. User-Centric Product Development
   Integrating assistive technology checks and aria-label usage fosters an inclusive mindset, ensuring your product is robust and future-friendly for all users.

1. Deque Systems

Headquarters: Herndon, Virginia, USA
Overview:
Deque is a global authority on digital accessibility, offering tools like Axe — a popular open-source library for automated scanning — and in-depth consulting services. They help organizations with WCAG audits, training, and product roadmapping to embed accessibility throughout the SDLC.

Core Services:

• Axe Accessibility Tool for automated scanning
• Manual accessibility audits and user testing
• WCAG 2.1, Section 508, ADA compliance
• Customized training and DevOps integration

Why They Stand Out:

• Developers of the widely adopted Axe suite
• Broad experience across industries, from eCommerce to government
• Continuous updates to align with evolving WCAG guidelines

2. Level Access

Headquarters: Vienna, Virginia, USA
Overview:
Level Access (formerly known as SSB BART Group) offers an end-to-end suite of accessibility solutions, including software, training, and managed services. Their AMP (Accessibility Management Platform) streamlines audits, testing, and reporting for large enterprises.

Core Services:

• AMP for continuous monitoring and compliance reporting
• Manual screen reader and keyboard navigation checks
• Ongoing compliance for WCAG, ADA, Section 508
• Accessibility training and organizational policy development

Why They Stand Out:

• Comprehensive platform enabling scalable enterprise deployments
• Expertise in banking, insurance, healthcare, and higher education
• Extensive partnerships with major technology consultancies

3. TPGi (Formerly The Paciello Group)

Headquarters: St. Petersburg, Florida, USA
Overview:
TPGi is a pioneer in assistive technology research and digital accessibility consulting. From thorough usability testing with real users to specialized ARIA reviews, they help organizations create and maintain accessible digital products across devices and platforms.

Core Services:

• In-depth manual audits with assistive technology users
• ARIA (Accessible Rich Internet Applications) validation
• WCAG 2.1 training and compliance verification
• Browser plugin tools like ARC Toolkit for easy scanning

Why They Stand Out:

• Thought leaders in inclusive design and a11y best practices
• Long-standing presence in the accessibility community
• Tailored consulting for complex enterprise systems

4. Applause

Headquarters: Framingham, Massachusetts, USA
Overview:
Applause is known for its crowdtesting approach, leveraging a global network of testers — including people with disabilities — to provide real-world accessibility feedback. This model ensures thorough usability insights that automated tools or in-house testing alone may miss.

Core Services:

• Crowdsourced accessibility and usability testing
• Functional, mobile, and cross-platform audits
• WCAG/ADA compliance audits with real assistive tech users
• Comprehensive reporting and remediation recommendations

Why They Stand Out:

• Real-world coverage with community-based testing
• Rapid turnaround and large tester pool
• Flexible solutions for startups and global enterprises

5. DeviQA

Headquarters: Kharkiv, Ukraine (Global Delivery)
Overview:
DeviQA is a specialized software testing provider that also emphasizes accessibility testing. Their experienced team ensures products meet WCAG standards, focusing on manual audits, assistive technology checks, and user flow improvements to accommodate diverse needs.

Core Services:

• WCAG 2.1 manual accessibility reviews
• Screen reader and keyboard navigation testing
• Automation solutions integrating accessibility checks
• Consulting on ARIA attributes and color contrast

Why They Stand Out:

• Agile approach suited for both startups and established enterprises
• Strong integration of test automation with accessibility workflows
• On-demand testing resources for evolving project requirements

6. QA InfoTech (A Qualitest Company)

Headquarters: Noida, India (Global Operations)
Overview:
QA InfoTech delivers a broad spectrum of QA services, including specialized accessibility consulting. They conduct manual screen reader tests, assistive tech validations, and automated scans to pinpoint issues in user interfaces and content structures.

Core Services:

• Accessibility compliance audits (WCAG 2.1, Section 508)
• Assistive technology testing (JAWS, NVDA, VoiceOver)
• Code-level remediation for digital apps and websites
• Consulting on inclusive UX and design best practices

Why They Stand Out:

• Expertise in BFSI, eLearning, and eCommerce domains
• Large-scale resource pool for rapid project execution
• Alignment with Qualitest for end-to-end QA transformations

7. Tenon

Headquarters: Washington, D.C., USA
Overview:
Tenon offers accessibility solutions powered by their API-based testing platform, which integrates seamlessly into DevOps pipelines. Beyond automated scans, Tenon experts conduct manual usability reviews to address color contrast, ARIA usage, and keyboard navigation.

Core Services:

• Tenon.io API for automated scans and reporting
• Manual screen reader testing and ARIA checks
• Specialized audits for WCAG 2.1 and Section 508
• Workshops and training for dev and design teams

Why They Stand Out:

• Strong technical focus with CI/CD integration
• Flexible, API-driven approach for custom frameworks
• Leader in quick, actionable reporting for agile teams

8. Accessible Web

Headquarters: Manchester, New Hampshire, USA
Overview:
Accessible Web specializes in website and web app accessibility, offering a platform for continuous WCAG scanning and remediation guidance. Their agency-style services include design reviews, content audits, and compliance certification seals to demonstrate conformance.

Core Services:

• WCAG scanning and reporting with daily/weekly checks
• Design and layout adjustments for inclusive UI
• Consulting on compliance strategy (ADA, Section 508)
• Ongoing maintenance and accessible content updates

Why They Stand Out:

• All-in-one approach: design, testing, remediation
• Up-to-date with evolving accessibility regulations
• Clear, user-friendly dashboards and progress tracking

9. Mindtree (A Larsen & Toubro Group Company)

Headquarters: Warren, New Jersey, USA & Bangalore, India
Overview:
Mindtree’s Quality Engineering practice extends to accessibility audits, focusing on user-centric design. They cover responsive frameworks, mobile apps, and enterprise-level portals, ensuring seamless experiences for users with diverse needs.

Core Services:

• Automated scanning for early WCAG detection
• Assistive technology (JAWS, NVDA, etc.) manual checks
• Color contrast, keyboard navigation, and ARIA validations
• Guidance on inclusive content and UX design

Why They Stand Out:

• Strong synergy with L&T’s engineering background
• Comprehensive QA offerings that blend automation and manual testing
• Domain expertise in BFSI, healthcare, and retail

Conclusion

Accessibility testing is more than a compliance requirement — it’s a fundamental pillar of inclusive design. By collaborating with these top accessibility testing companies, businesses can address WCAG standards, optimize user experiences, and demonstrate a commitment to digital inclusion. From crowdsourced feedback loops to specialized assistive technology validations, these firms help organizations stay ahead of evolving regulations and user expectations.

Frequently Asked Questions (FAQ)

1. Why is accessibility testing important?
   Accessibility testing ensures digital products are usable by people with disabilities, improving user satisfaction, brand reputation, and compliance with legal standards like WCAG and ADA.
2. How often should I conduct accessibility testing?
   Ideally, it should be integrated from the start of your development cycle. Regular tests — after major design changes or feature updates — help maintain ongoing WCAG compliance.
3. Do automated tools replace manual accessibility checks?
   No. Automated tools detect many issues but can miss contextual problems that require human judgment. A blend of automated scanning and manual testing with assistive technologies is crucial.
4. Which assistive technologies are commonly tested?
   Popular options include screen readers like JAWS, NVDA, VoiceOver, along with keyboard-only navigation and voice control (e.g., Dragon NaturallySpeaking).
5. Can these companies help with website redesign or development?
   Many do. They often offer consulting, training, and code-level remediation strategies, ensuring accessibility is embedded in design frameworks and continuous integration pipelines.

Embracing web accessibility not only meets the needs of diverse user groups but also fosters innovation, usability, and reliability. By partnering with an experienced accessibility testing company, organizations can open digital doors for everyone, drive loyalty, and future-proof their brand in a rapidly evolving market.