c15t

c15t is a headless consent management framework for web applications. It handles the cookie banner, user consent, and privacy compliance as part of the app bundle rather than as a third-party script, giving developers control over the consent user experience.

It ships framework-agnostic core packages plus React and Next.js integrations, built-in internationalization, and prebuilt scripts for 25+ analytics and marketing tools such as Google Tag Manager, GA4, and Meta Pixel. A backend package adds a consent policy engine, geo-location detection, and audit logging, and a CLI handles config generation and database migrations.

c15t is written in TypeScript and licensed under Apache 2.0. It can run against a self-hosted backend or in hosted mode against the c15t cloud.