# Pa11y vs Stark

**Leader by Vioscale score:** Stark

| Attribute | Pa11y | Stark |
|---|---|---|
| **Vioscale score** | 44.9 (30% (low)) | 61.3 (55% (medium)) |
| activity.commits_last_30d | 3 | - |
| adoption.dependent_repos | 1,668 | - |
| adoption.github_stars | 4,490 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | A suite of free and open-source tools for identifying and tracking accessibility issues on websites. Provides both automated testing via a web dashboard and command-line utilities for developers. | Integrated platform that helps teams detect and remediate accessibility problems throughout the design and development lifecycle, combining automated scanning with continuous monitoring and real-time compliance reporting. |
| features.capabilities | `{"open_source":true,"scan_method":"automated-rules-engine","ci_cd_integration":true,"continuous_monitoring":true}` | `{"wcag_level":"AA","scan_method":"automated-rules-engine","browser_extension":true,"ci_cd_integration":true,"design_stage_plugin":true,"vpat_acr_generation":true,"continuous_monitoring":true}` |
| integrations.count | - | 12 |
| integrations.list | - | `[{"name":"Figma"},{"name":"Sketch"},{"name":"GitHub"},{"name":"Chrome"},{"name":"Arc"},{"name":"Safari"},{"name":"Microsoft Edge"},{"name":"Brave"},{"name":"Storybook"},{"name":"React"},{"name":"iOS"},{"name":"Android"}]` |
| language.primary | JavaScript | - |
| license.spdx | LGPL-3.0 | - |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true,"linux":true}` | `{"cli":true,"ios":true,"mac":true,"web":true,"android":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://pa11y.org/","retrievedAt":"2026-08-21T13:21:08.576Z"}` | `{"type":"subscription","plans":[{"free":false,"name":"Premium Pack","summary":"$198/user/year (minimum 3 seats)","features":["Automated detection and remediation tooling (Figma only)","Automatic WCAG scans and reports in browser","Live code highlighting in browser web dev console"],"minSeats":3,"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":198,"period":"year","currency":"USD"}],"description":"Automated detection and remediation for Figma design files with browser-based WCAG audits","contactSales":false},{"free":false,"name":"Launch","summary":"$2,500/year","features":["25 viewers included","Monitor up to 100 pages","Weekly automated scans and reports","Supported assets: Figma, code repos, public URLs","30-day report data storage","Automated detection and remediation tooling in design and code"],"commitment":"annual","components":[{"kind":"fixed","amount":2500,"period":"year","currency":"USD"}],"description":"Starter plan for small teams with basic scanning and monitoring capabilities","contactSales":false,"includedLimits":{"viewers":"25","scan_frequency":"weekly","pages_monitored":"100","report_retention":"30 days"}},{"free":false,"name":"Grow","summary":"$8,000/year","features":["50 viewers included","Monitor up to 1000 pages","Daily scans and insight reports","Supported assets: Figma, code repos, CI/CD, iOS, Android, public and private URLs","180-day report data storage","Ticketing system integration","Automated draft VPAT report","Compliance Center to manage accessibility posture","Single Sign-On (SSO)"],"commitment":"annual","components":[{"kind":"fixed","amount":8000,"period":"year","currency":"USD"}],"description":"Mid-market plan with extended monitoring, daily scans, compliance features and ticketing integration","contactSales":false,"includedLimits":{"viewers":"50","scan_frequency":"daily","pages_monitored":"1000","report_retention":"180 days"}},{"free":false,"name":"Scale","summary":"$21,000/year (custom terms available)","features":["Unlimited viewers","Monitor up to 4000 pages","Real-time scans and insights reports","365-day report data storage","Single Sign-On (SSO) and JIT provisioning","Customizable terms and security reviews","Priority support and dedicated account manager","Enterprise-grade security, SOC2 and GDPR certified"],"commitment":"annual","components":[{"kind":"fixed","amount":21000,"period":"year","currency":"USD"}],"description":"Enterprise plan with real-time monitoring, unlimited viewers, advanced compliance and dedicated support","contactSales":true,"includedLimits":{"viewers":"unlimited","scan_frequency":"real-time","pages_monitored":"4000","report_retention":"365 days"}}],"summary":"From $198/user/year (Premium Pack, minimum 3 seats) or from $2,500/year (Launch plan). Free tier available.","currency":"USD","freeTier":true,"sourceUrl":"https://www.getstark.co/pricing","retrievedAt":"2026-08-25T08:32:47.236Z","startingPrice":{"amount":2500,"period":"year","currency":"USD"},"billingPeriods":["year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | freemium |
| pricing.price_level | free | high |
| pricing.starting_price | - | `{"amount":2500,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| release.cadence_days | 131 | - |
| release.history | `[{"url":"https://github.com/pa11y/pa11y/releases/tag/9.1.1","date":"2026-02-26T14:45:52Z","type":"stable","version":"9.1.1"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.1.0","date":"2026-02-03T18:13:04Z","type":"stable","version":"9.1.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.0.1","date":"2025-09-25T13:56:19Z","type":"stable","version":"9.0.1"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.0.0","date":"2025-05-09T01:30:35Z","type":"stable","version":"9.0.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/8.0.0","date":"2024-03-27T03:22:52Z","type":"stable","version":"8.0.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/7.0.0","date":"2024-01-16T06:42:20Z","type":"stable","version":"7.0.0"}]` | - |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 7.3 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=pa11y&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Accessibility Testing)

| Capability | Pa11y | Stark |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Scan method | Automated rules engine | Automated rules engine |
| Wcag level | - | AA |
| Ci cd integration | ✓ | ✓ |
| Browser extension | - | ✓ |
| Design stage plugin | - | ✓ |
| CMS plugins | - | - |
| Continuous monitoring | ✓ | ✓ |
| Vpat acr generation | - | ✓ |
| Manual audit service | - | - |
| Overlay widget | - | - |
| Document PDF testing | - | - |
| Open source | ✓ | - |

*Source: Vioscale. Generated 2026-09-01T15:20:01.441Z. "-" = undocumented, not absent.*