TPGi’s identity is a little unusual in this category because the company built its reputation on manual, human-led accessibility testing decades before it built a monitoring platform to go with it. It was founded in 2002 as The Paciello Group by Mike Paciello, one of the field’s genuine pioneers, and it rebranded as TPGi in 2021 after being acquired by Vispero, the company behind the JAWS screen reader. That parentage matters more than it might first appear: it means TPGi’s testers work alongside people who literally build assistive technology, not just people who test against it secondhand.
What TPGi actually sells
Two things, really, sold together or separately. The first is professional services: manual audits, design reviews, assistive-technology testing performed by actual testers using screen readers and other tools, program and strategy development, and training through ARC Tutor and the ARC KnowledgeBase. The second is ARC Platform, a monitoring and program-management suite that includes ARC Monitoring for continuous automated scanning, ARC Toolkit and ARC Capture as browser extensions for page-level and deep testing, ARC User Flows for multi-step journey testing, ARC API plus ARC-WebDriver and ARC-Playwright for CI/CD integration, and ARC HelpDesk for on-demand expert support when a team gets stuck. Unusually for this category, ARC Platform is available both as cloud SaaS on AWS and as a self-hosted deployment, which matters for organizations with strict data-residency or security requirements that rule out cloud-only vendors outright.
| Feature | TPGi | Deque Systems | Level Access | Allyant |
|---|---|---|---|---|
| Approach | Longtime accessibility consultancy, founded in 2002 as The Paciello Group and rebranded TPGi in 2021 after being acquired by Vispero (maker of the JAWS screen reader), known for deep manual expert audits and real assistive-technology testing, paired with its ARC Platform for continuous automated monitoring, developer integrations and program governance, available as cloud SaaS or self-hosted. | 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. | One of the longest-running digital accessibility companies, founded in 1999 by engineers with disabilities, now selling the Accessibility Management Platform (AMP) alongside manual audits, AI-assisted remediation tooling, mobile and document testing, and training, aimed at large enterprises and government agencies running full compliance programs. | 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 | Pricing not published - contact sales for a quote; TPGi publishes a tier and feature comparison for ARC Platform but no dollar figures | 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 for a quote | Pricing not published - contact sales; a free trial is available for the CommonLook PDF software line |
| Standards supported | WCAG 2.1, WCAG 2.2, Section 508, EN 301 549 | WCAG 2.0, WCAG 2.1, WCAG 2.2, Section 508, EN 301 549 | WCAG 2.1, WCAG 2.2, ADA, Section 508, EN 301 549, AODA | WCAG 2.1, Section 508, PDF/UA, EN 301 549 |
| Best for | Enterprises and public-sector organizations that want expert-led manual audits and genuine assistive-technology testing backed by a dedicated monitoring platform; Organizations with data residency or security requirements that need a self-hosted deployment option rather than cloud-only SaaS | Engineering teams that want to test and fix code directly; Large enterprises needing audits, training and VPAT documentation | Large enterprises and government agencies that want one vendor covering automated testing, manual audits, mobile, documents and training; Federal and public-sector buyers who need a FedRAMP-authorized platform | Enterprises and government agencies with large volumes of PDFs and documents to remediate |
Standards and markets
TPGi documents support for WCAG 2.1 and 2.2, Section 508 and EN 301 549, giving it coverage across the major US federal standard and the harmonized European one, alongside the current and previous WCAG versions. That’s solidly in line with the other enterprise-focused platforms in this category, and TPGi’s staff are, per the company, regularly involved in contributing to the underlying accessibility standards themselves rather than just testing against them from the outside.
Pricing model
TPGi doesn’t publish dollar figures. It does publish a tier and feature comparison for ARC Platform, which is a small but genuinely useful bit of transparency, letting a prospective buyer see what’s included at each level before ever getting on a call, even without knowing what any of it costs. Manual audit and consulting engagements are quoted separately and scoped to the work involved, which is standard practice for that kind of professional services work across the industry.
Manual testing as the actual differentiator
Where a lot of vendors in this category lead with their platform and treat manual testing as an add-on, TPGi’s history runs the other way. The company built its name on expert-led audits and real assistive-technology testing long before ARC Platform existed, and that manual-first identity still shows in how the two are positioned: the platform handles continuous monitoring and developer workflow integration at scale, while the people, actual testers using actual screen readers, handle the judgment calls that automation still can’t make reliably, like whether a custom widget’s behavior genuinely makes sense to someone navigating by keyboard or screen reader alone. Being part of Vispero reinforces this rather than diluting it. Working alongside the team that builds JAWS gives TPGi’s testers a level of hands-on assistive-technology fluency that’s hard to replicate at a vendor without that in-house connection.
Honest USPs
TPGi’s genuine differentiators, based on its own documentation, are its long operating history as a dedicated accessibility consultancy, its ownership relationship with Vispero and the in-house JAWS expertise that comes with it, and the self-hosted deployment option for ARC Platform that most cloud-only competitors don’t offer. None of those are things a competitor can easily replicate quickly; they’re structural, not marketing claims.
Best for and not for
TPGi is a strong fit for enterprises and public-sector organizations that want genuinely expert-led manual audits and real assistive-technology testing, backed by a monitoring platform rather than automation standing in for human judgment, and for any organization whose security or data-residency requirements need a self-hosted option. It’s a poor fit for a business wanting a consumer-facing widget with automated visual fixes, or one wanting instant, no-conversation self-serve pricing; TPGi’s model runs through scoped engagements and quotes, not a checkout page. For a small business without the budget or need for expert-led audits, a widget-first approach like Wawsome will fit the actual problem better and at a fraction of the cost.