c15t vs Klaro!
Klaro! is an open-source consent manager for
third-party apps and services. Its JavaScript API exposes a ConsentManager
that can read, save, apply, and reset choices. Its docs also cover
Google Tag Manager and Consent Mode v2.
c15t is the better starting point when consent needs to live in JavaScript, React, Next.js, and the backend. Klaro! is useful when the main job is managing named third-party services on a script-tag site.
Warning
Consent tooling does not guarantee legal compliance by itself. Your policies, disclosures, vendor list, regional behavior, and record-keeping still need to match your legal requirements.
Why c15t wins here
- c15t gives JavaScript, React, and Next.js teams one consent model.
- c15t supports server-visible consent state through hosted, self-hosted, or custom backend modes.
- c15t includes policy packs for regional behavior instead of leaving all policy logic in app-owned configuration.
- c15t supports script, iframe, and network control from the same platform.
- c15t keeps the door open for durable records, generated docs, and IAB TCF.
Comparison
| Area | c15t | Klaro! |
|---|---|---|
| Primary shape | Developer-first consent platform | Service and purpose consent manager |
| Framework support | First-class JavaScript, React, and Next.js packages | Script-first setup or custom wrappers |
| Backend records | Hosted or self-hosted records | Client storage unless extended |
| Policy handling | Policy packs and backend state | App-owned purpose and service config |
| Script control | Loader, iframe blocker, network blocker, and integrations | Configured apps and services |
| SSR awareness | Available through c15t framework packages | Client-side by default |
Bottom line
Start with c15t for traditional JavaScript sites too. Service management is only one part of consent, and c15t keeps consent ready for frameworks, backend records, server-side state, regional policy, and future compliance workflows.
See the full overview in Compare c15t.