TLDR
Most accessibility tools are built for single organizations managing their own sites. Agencies need something different: multi-client management, client-deliverable reporting, and pricing that works across a portfolio. This comparison covers the realistic options for agencies in 2026.
| Tool | Starting Price | Multi-Client | Source Scanning | White-Label Reports |
|---|---|---|---|---|
| A11yProof | $29/mo (portfolio) | Yes | Yes | Yes |
| axe DevTools Pro | $40-$100/user/mo | No | Yes | No |
| accessiBe | $49-$199/site/mo | No | No (overlay) | No |
| AudioEye | $199+/mo | No | No (overlay) | No |
| Siteimprove | Custom enterprise | No | Yes | No |
A11yProof
An accessibility scanner designed specifically for agencies: multi-client dashboard, source-level WCAG scanning, white-label PDF reports, and scheduled re-scans for maintenance retainers.
Pros
- ✓ Multi-client management from a single agency account
- ✓ Source-level WCAG 2.1 AA scanning with element-level issue reports
- ✓ White-label client reports for project deliverables and retainers
- ✓ Scheduled scans for ongoing monitoring without manual effort
Cons
- × Pre-launch product — no established customer track record yet
- × No human expert review tier at launch
Pricing: $29/mo (agency portfolio)
Verdict: Best for agencies that want WCAG scanning and client deliverable reports across their full portfolio without per-site billing.
axe DevTools Pro
A developer-first accessibility testing tool built on the trusted open-source axe-core engine. Browser extension and IDE integrations for in-development WCAG feedback.
Pros
- ✓ Developer workflow integration — browser extension, IDE plugin, CI/CD API
- ✓ Detailed WCAG criterion mapping for each identified issue
- ✓ axe-core engine trusted across the accessibility community
Cons
- × Per-user pricing — each developer needs a seat
- × No multi-client dashboard or client reporting
- × Manual scan initiation; no scheduled monitoring without CI integration
Pricing: $40-$100/user/mo
Verdict: Best for agencies where developers are actively remediating code — not for portfolio monitoring or client reporting.
accessiBe
An AI-powered JavaScript overlay widget that installs on client sites and applies runtime accessibility modifications without changing source code.
Pros
- ✓ Fast installation — single script tag
- ✓ Reseller partner program available
- ✓ No developer involvement required post-install
Cons
- × Overlay model — does not produce source-level remediation documentation
- × Per-site pricing compounds quickly across client portfolios
- × WCAG conformance contested when underlying code is not fixed
Pricing: $49-$199/site/mo
Verdict: Appropriate only if clients specifically want an overlay widget; not a substitute for source-level auditing.
AudioEye
An enterprise accessibility overlay with optional human expert review tiers, positioned for ADA litigation defense.
Pros
- ✓ Human expert review at higher tiers
- ✓ Strong legal documentation for ADA compliance
Cons
- × High entry price — $199/month per site
- × Enterprise model doesn't fit agency multi-client workflows
- × No white-label client reporting
Pricing: $199+/mo per site
Verdict: Suitable only for agency clients with active ADA legal concerns and budget to match.
Siteimprove
A comprehensive digital quality platform bundling accessibility, SEO, analytics, and content quality for in-house enterprise digital teams.
Pros
- ✓ Comprehensive platform beyond accessibility alone
- ✓ Strong WCAG reporting and compliance trend tracking
Cons
- × No published pricing — annual contract required
- × Built for single-organization in-house teams, not agencies
- × Scope and cost exceed what agencies need for accessibility work
Pricing: Custom enterprise (annual contract)
Verdict: Better fit for in-house enterprise digital teams than for agency client portfolio management.
Found your pick?
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See plans & pricingAgencies researching accessibility tools find a market built for the wrong buyer. Most products target either individual developers, single-organization in-house teams, or enterprises managing legal risk on their own properties. The multi-client agency workflow — scan client sites, produce client reports, monitor portfolios at scale — is underserved.
This comparison covers the five most commonly evaluated tools for agencies. The framing is practical: what does each tool cost at portfolio scale, does it produce client-deliverable output, and does the account architecture match how agencies work?
Two entries (accessiBe, AudioEye) are overlay products that differ fundamentally from scanning tools — they are included because they appear prominently in searches and agencies need to understand the distinction before recommending them to clients. One entry (Siteimprove) is an enterprise platform included because its name recognition exceeds its fit for agency work. Two entries (A11yProof, axe DevTools Pro) are source-level scanning tools that produce remediation documentation.
The right combination for most agencies: a portfolio-level scanner for ongoing monitoring and client reporting, plus developer tooling during active builds.
Q&A
What is the best accessibility tool for web agencies?
A11yProof is designed for the agency workflow: multi-client management, source-level WCAG scanning, and white-label reports from a single account at $29/month. For developers doing active remediation during builds, axe DevTools Pro is a strong complement. Overlays like accessiBe and AudioEye serve a different use case — runtime patching rather than code remediation.
Q&A
How much does accessibility auditing cost for a web agency?
Tool costs vary: axe DevTools Pro at $40-$100/user/month, accessiBe at $49-$199/site/month, AudioEye at $199+/month, Siteimprove at custom enterprise rates. A11yProof covers the full agency portfolio at $29/month. Tool cost is separate from the developer time needed to remediate identified issues.
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