Deque and Allyant are both enterprise-grade accessibility vendors with long track records, but they occupy different parts of the workflow. Deque is a developer-tooling company built around axe-core, the open-source testing engine that underpins many other vendors’ scanners. Allyant is a document and publishing remediation specialist formed in 2022 from a merger of several accessibility service providers, including Accessible360. Neither sells a consumer-facing widget.
| Feature | Deque Systems | Allyant |
|---|---|---|
| Approach | Enterprise accessibility testing and remediation company built around the open-source axe-core engine, sold as developer tooling (axe DevTools, axe Monitor, axe Auditor) plus expert manual audits and training, not a consumer widget. | Formed in 2022 by Thompson Street Capital Partners combining Accessible360, ReadSpeaker's document services and other accessibility businesses; focuses on enterprise document, PDF and publishing remediation alongside broader digital accessibility consulting, with an AI-assisted PDF remediation product launched in 2025. |
| Pricing | axe-core: free (open source). axe DevTools Extension: free tier available, with a Pro seat reported by third-party pricing trackers at roughly $1,250/yr per developer. axe Monitor and full axe DevTools for Web/Enterprise pricing is not published - contact sales | Pricing not published - contact sales; a free trial is available for the CommonLook PDF software line |
| Standards supported | WCAG 2.0, WCAG 2.1, WCAG 2.2, Section 508, EN 301 549 | WCAG 2.1, Section 508, PDF/UA, EN 301 549 |
| Best for | Engineering teams that want to test and fix code directly; Large enterprises needing audits, training and VPAT documentation | Enterprises and government agencies with large volumes of PDFs and documents to remediate |
Where they differ most
Deque’s product line, axe DevTools for developers and QA, axe Monitor for continuous scanning at scale, and axe Auditor, is built to plug into engineering workflows directly: code gets tested and fixed at the source. axe-core itself, the engine underneath all of it, is free and open source, which is a meaningfully different cost structure than most of the category. Deque backs that tooling with expert-led manual audits, VPATs and training, and has a long history in W3C standards work, but its center of gravity is developer-facing testing rather than document remediation.
Allyant’s center of gravity is the opposite: large-scale PDF and document accessibility remediation, publishing and communications accessibility services, and enterprise consulting, aimed at organizations, often government agencies and higher-education institutions, that need forms, reports and publications made properly accessible and PDF/UA conformant. Allyant launched an AI-assisted PDF remediation product in July 2025 to speed up that work, but it isn’t a developer testing platform and doesn’t offer anything comparable to axe-core.
Standards coverage overlaps on WCAG, Section 508 and EN 301 549, but Allyant additionally supports PDF/UA specifically, the standard governing accessible PDF structure, which sits outside what Deque’s tooling addresses.
Company background and how each got here
Deque has a long history in accessibility consulting and W3C standards work, and axe-core’s position as the most widely used automated testing engine, one that underpins scanners built by other vendors entirely, gives the company a kind of infrastructure-level presence in the industry that goes beyond its own commercial products. Deque’s pricing for its commercial tools (axe DevTools, axe Monitor, axe Auditor) and for consulting and audits is enterprise-quoted by seats and scan volume, while axe-core itself remains free and open source for any team that wants to self-serve.
Allyant’s history is shorter and more consolidated: it was launched in 2022 when Thompson Street Capital Partners merged Accessible360, ReadSpeaker’s document accessibility services and other accessibility businesses into a single company focused on documents, publishing and communications. That merger-driven origin is part of why Allyant’s strength is specifically document and PDF remediation at scale rather than a broad product suite, and why its client base leans public-sector and higher-education, sectors that generate enormous volumes of forms, reports and PDFs that need to be properly tagged and structured.
Which one should you pick
If the work in front of you is testing and fixing a web application’s code, integrating accessibility checks into a CI pipeline, or training engineers to catch issues before release, Deque’s axe-based tooling and audits are built for exactly that. If the work is a backlog of PDFs, forms or publications that need proper tagging and structure, that’s Allyant’s specialty and not something axe DevTools is designed to solve. Large organizations with both a codebase to test and a document library to remediate sometimes use both, since the two rarely compete for the same budget line.
It’s also worth being clear about what neither one is: a plug-in widget for a live website. If what you actually need is a fast, no-developer way to add accessibility adjustments to a public-facing site, neither Deque’s developer tooling nor Allyant’s document remediation is built for that job, and a widget-plus-monitoring product aimed at that use case would be a better starting point.