ExploreGit

Best Open-Source Consent Management Tool for Privacy Compliance

3 open-source options compared for consent management tool for privacy compliance, with live GitHub data on each.

Last updated Repo data refreshed 25 Oct 20263 options
Our pick · cookieconsent

Our pick is CookieConsent because it is the only actively maintained and robust client-side solution for user consent among the evaluated options. It is a simple, customizable, lightweight, vanilla JavaScript cookie consent plugin with an MIT license, showing strong ongoing development with a recent push on 2026-07-23 and an active status. While Klaro offers an open-source, privacy-friendly consent manager, its dormant maintenance status and absence of a latest release raise reliability concerns for long-term production. Fides, a privacy engineering and compliance framework, is archived, rendering it unsuitable for new projects due to abandoned maintenance.

CookieConsent vs Klaro vs Fides: side by side

ProjectLicenceLanguageGitHub starsLast commitLatest releaseStatusHosting modelLearning curve (our estimate)Maturity (our estimate)
CookieConsentMITJavaScript5,71723 Jul 20264 Feb 2025 v3.1.0Activeunknown2/5 (easy)production-ready
KlaroBSD-3-ClauseJavaScript1,52227 Mar 2025unknownDormantunknown2/5 (easy)stable
FidesApache-2.0Python4826 Aug 20261 Jun 2026 2.86.2Archivedunknown4/5 (hard)beta

Learning curve and maturity are ExploreGit's AI-assisted estimates; everything else is from GitHub or the project's own docs (linked).

01

orestbida/cookieconsent

Our pickActive
★ 5,717 starsLicence: MITLast commit 23 Jul 2026Latest release 4 Feb 2025JavaScript

This is a simple, lightweight, and GDPR compliant cross-browser cookie consent plugin written in vanilla JavaScript.

Best for: Websites and applications seeking a straightforward, client-side, and GDPR-compliant cookie consent solution with no external dependencies.

What's good

  • Developed in vanilla JavaScript, ensuring a lightweight footprint and easy integration without external dependencies.
  • Explicitly designed to be GDPR compliant, providing essential features for regulatory adherence.
  • Offers cross-browser compatibility, ensuring consistent functionality across different web environments.
  • Actively maintained, with recent updates and releases, indicating ongoing support and improvements.

Watch out for

  • Primarily handles client-side cookie consent, with limited scope for broader data privacy management beyond browser-level controls.
  • Integration with backend systems for server-side consent tracking or managing data subject requests would require custom development.
  • While highly configurable, achieving complex consent flows might necessitate a thorough understanding of its configuration options, potentially increasing initial setup time.
02

kiprotect/klaro

Dormant
★ 1,522 starsLicence: BSD-3-ClauseLast commit 27 Mar 2025JavaScript

A simple and flexible JavaScript solution for managing cookie consent and privacy preferences on websites.

Best for: Websites needing a straightforward, multi-language cookie consent manager, provided they are aware of and accept its dormant maintenance status and license ambiguity.

What's good

  • Offers clear configuration for different services, making it easy to manage consent for various third-party scripts.
  • Supports multiple languages out-of-the-box, essential for international privacy compliance.
  • Provides a clean and user-friendly interface for end-users to manage their consent preferences.
  • Relatively easy to integrate into existing websites with minimal dependencies.

Watch out for

  • The project is currently dormant with no recent commits within the last year, indicating a lack of ongoing active development.
  • Lacks a clear license, which can pose legal and compliance risks for commercial projects.
  • Primarily a client-side cookie consent manager, not a full-fledged data privacy platform.
03

ethyca/fides

Archived
★ 482 starsLicence: Apache-2.0Last commit 6 Aug 2026Latest release 1 Jun 2026Python

An open-source data privacy platform designed to automate and manage data privacy compliance across systems.

What's good

  • Aimed to provide a comprehensive solution beyond just cookie banners, including data mapping, access requests, and privacy policy management.
  • Designed to integrate with various data systems to automate privacy compliance workflows.
  • Apache-2.0 license is permissive and suitable for commercial use.

Watch out for

  • The project is officially archived and no longer maintained, meaning no future updates, bug fixes, or security patches.
  • Despite its ambitious scope, the archived status makes it unsuitable for production environments requiring active support and evolution.
  • Steeper learning curve and more complex setup compared to simple cookie banners due to its broader platform approach.

"Dormant" means no commit pushed to the default branch in the last 12 months. "Archived" means the maintainers have marked the repository read-only on GitHub. "Deprecated" means the project's README says it is deprecated or no longer maintained. Stars, licence, commit and release dates come from the GitHub API (GitLab for projects developed there) and are cached for up to 24 hours. The written analysis is AI-assisted and checked against that data.

Frequently asked questions

Are CookieConsent, Klaro and Fides actively maintained?

CookieConsent is active: it has had a commit in the last 12 months (most recent: CookieConsent on 23 Jul 2026). Klaro is dormant: no commit since 27 Mar 2025. Fides is archived (read-only) on GitHub. Status is checked against GitHub daily.

What licences do CookieConsent, Klaro and Fides use?

CookieConsent: MIT; Klaro: BSD-3-Clause; Fides: Apache-2.0. Check each project's licence file before use.

Which is easiest to learn: CookieConsent, Klaro or Fides?

By our estimate (1 = easiest, 5 = steepest): CookieConsent 2/5, Klaro 2/5, Fides 4/5. CookieConsent and Klaro share the gentlest learning curve. This is ExploreGit's AI-assisted estimate, not a measured figure.

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