Side by side
ARC Toolkit vs Sa11y
Both stand on accessibility testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan ExtensionMacWindows
ARC Toolkit focuses on practical, page-level WCAG investigation with browser-based results, visual checks, and remediation guidance. Its free Chrome and Firefox extensions are useful for developer and QA workflows, provided on-demand scans meet your needs.
Visit ARC Toolkit Free plan APILinuxMac+3
Sa11y offers integrations across unit, component, integration, and browser testing workflows. Teams should account for rendered-DOM requirements and browser-mode limitations when planning coverage.
Visit Sa11yThe facts
| ARC Toolkit | Sa11y | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Extension, Mac, Windows | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 2 | 1 |
| Maker | ARC Toolkit | Not published |
| Website | vispero.com | opensource.salesforce.com |
| On accessibility testing software | #63 of 169 | #67 of 169 |
ARC Toolkit: what it does well
- Free for all users
- Chrome and Firefox extensions
- Code-level remediation recommendations
- Visual tab-order path
- Copy findings into bug trackers
What to know first
- Only scans individual pages
- No scheduled scans
- Not offered as a free trial
- Limited license and $100 liability cap
Sa11y: what it does well
- Free open-source packages
- Jest and Vitest matchers included
- WebdriverIO browser assertions
- Base, Extended, and Full rule presets
- WCAG metadata in reports
What to know first
- Checks require a rendered DOM
- JSDOM limits visual and media checks
- Headless WebdriverIO skips color-contrast checks
Alternatives to ARC Toolkit Alternatives to Sa11y The whole list