The Best Open-Source Alternatives to Eppo

GrowthBook is a user-friendly, open-source A/B testing and feature flagging platform that allows developers to experiment and optimize digital experiences while prioritizing user privacy. As a compelling alternative to Eppo, GrowthBook offers a scalable, adaptable solution that promotes data protection and customization, making it an ideal choice for organizations seeking a transparent, community-driven approach to product experimentation.

Flagsmith is an open-source feature flag management system that enables development teams to deploy and manage features with confidence, prioritizing user data privacy and control. By providing a private, self-hosted alternative to Eppo, Flagsmith empowers organizations to maintain full ownership of their feature toggle workflow while ensuring compliance with stringent data protection regulations.

Pipcook is an open-source AI-powered continuous testing and optimization platform that automates feature flag management and A/B testing, providing a more private and transparent alternative to closed-source solutions like Eppo. With Pipcook, developers can easily manage feature flags and experiment with different versions of their application without compromising user data or compromising on security.

Pitest is a Java mutation testing tool that checks a program's resilience to mutations by intentionally introducing faults into the code and observing how the application behaves. Serving as a privacy-friendly and open-source alternative to commercial solutions like Eppo, Pitest helps developers identify and fix defects more effectively while preserving their project's data sovereignty.

Flagbridge is an open-source feature flagging system that manages rollout configurations, A/B testing, and dynamic feature toggles with real-time updates—built to run locally or in your own infrastructure. It offers the same powerful experiment orchestration as Eppo while keeping all data on-premises, ensuring full privacy, compliance, and control over user data.

Unlaunch is an open-source feature management and A/B testing platform that empowers developers to ship new features securely, monitor performance, and iterate on user feedback without compromising user data or vendor lock-in. As a privacy-friendly alternative to Eppo, Unlaunch offers flexible rollout strategies, precise control over data access, and open-source transparency - giving users the freedom to deploy, manage, and improve feature releases on their own terms.