Compare the Top Nonprofit Web Accessibility Testing Tools as of October 2025

What are Nonprofit Web Accessibility Testing Tools?

Web accessibility testing tools are designed to evaluate websites and applications for compliance with accessibility standards such as WCAG, Section 508, and ADA. They scan and analyze elements like color contrast, keyboard navigation, semantic structure, and screen reader compatibility to ensure digital content is usable by people with disabilities. Many tools provide automated reports, recommendations, and simulations of accessibility barriers to guide developers in fixing issues. They are used by web designers, developers, and compliance teams to create inclusive digital experiences and reduce legal or reputational risks. By integrating into workflows, these tools help organizations continuously monitor, test, and improve accessibility across web properties. Compare and read user reviews of the best Nonprofit Web Accessibility Testing tools currently available using the table below. This list is updated regularly.

  • 1
    CSS HTML Validator

    CSS HTML Validator

    AI Internet Solutions LLC

    CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.
    Starting Price: $79 (one time)
  • 2
    BrowserStack

    BrowserStack

    BrowserStack

    BrowserStack is the world’s largest cloud platform for software testing, with 19 global data centers & 20,000+ real Android and iOS devices that power nearly 1 Billion tests a year. BrowserStack's end-to-end unified testing platform is focused on supporting all genres of testing & operations, from functional testing to visual testing, accessibility testing, performance testing, test observability, API testing, and more. Over 50,000 customers, including Amazon, Paypal, Well Fargo Bank, Nvidia, MongoDB, Pfizer, GE, Discovery, React JS, Apache, JQuery and several others rely on BrowserStack to test their web & mobile apps.
    Starting Price: $29/month/user
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