Open-source alternatives to OneTrust

OneTrust is a large enterprise privacy-management suite — cookie consent is one module inside a platform that also covers data subject access requests (DSARs), vendor risk assessments, and data mapping. Most people searching for a “OneTrust alternative” only need the cookie-banner-and-consent-records piece, not the whole suite — so this comparison scopes to that.

Cookie consent module: feature comparison

What OneTrust has that no open-source cookie tool replicates

• Automated DSAR intake and fulfilment workflows across many connected systems.
• Vendor/third-party risk assessment scoring and questionnaires.
• Enterprise data mapping and processing-activity inventories (RoPA).
• A dedicated vendor support and compliance-advisory relationship.

What an open-source cookie consent module gives you instead

• No per-domain or per-pageview licensing — run it on as many properties as you own.
• Consent records stay on your own infrastructure rather than a vendor's multi-tenant platform.
• Full source access — audit exactly what the banner does and modify it if you need to.
• No procurement cycle — npm install and you're running.

Consenti is one option built specifically as a full-stack, zero-dependency alternative for this narrower scope: a banner widget, a backend with an immutable audit log, and an admin dashboard, all self-hosted. It won't replace OneTrust's DSAR or vendor-risk modules, but for the consent-banner-plus-records use case, it covers the same ground without the enterprise price tag.

Feature comparison reflects our understanding of public documentation as of July 2026. OneTrust, Klaro, orestbida/cookie-consent, and ConsentStack are trademarks of their respective owners; Consenti is not affiliated with, endorsed by, or sponsored by any of them. See the Terms of Use for our comparisons policy.

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