Open Source Alternatives to
LaunchDarkly
Unleash
Open-source feature management
Feature management solution built for developers.
Read more about Unleash
Unleash is an open-source feature management solution designed to help developers control the release of features in their applications. It allows teams to gradually roll out new features, enabling better testing and user experience management without redeploying the entire application.
Unleash provides a robust and flexible solution for feature management, making it easier for development teams to innovate and improve their applications continuously.
GrowthBook
Feature Flagging & A/B Testing
Open-source feature flagging and A/B testing platform.
Read more about GrowthBook
GrowthBook is an open-source platform that provides robust feature flagging and A/B testing capabilities. It allows organizations to experiment fearlessly and deliver confidently by managing feature flags and experiments together, all while maintaining full control over their data. Trusted by thousands of organizations, GrowthBook serves over 100 billion feature flag lookups per day, ensuring speed and optimal user experience.
GrowthBook is designed for teams across engineering, data science, product management, and marketing, providing a comprehensive solution for feature flagging and experimentation. With its commitment to privacy, control, and optimal user experience, GrowthBook ensures that your organization can innovate and grow with confidence.
FlagSmith
Feature Flagging Made Simple
Open-source feature flag and remote config service.
Read more about FlagSmith
Flagsmith is an open-source feature flagging and remote configuration service. It allows development teams to manage feature rollouts, segment users, and conduct A/B testing with ease. Flagsmith can be hosted on-premises or used as a cloud service, providing flexibility and control over your deployment environment.
Flagsmith is designed to make feature management less stressful and more efficient. With powerful tools for segmentation, testing, and remote configuration, it provides a robust solution for modern software development. Whether you're rolling out new features or conducting experiments, Flagsmith ensures you can do so with confidence and control.
FeatBit
Feature Flags for .NET
Open-source feature flags management tool.
Read more about FeatBit
FeatBit is an open-source feature flags management tool designed to empower developers to release features safely and efficiently. Written in .NET, FeatBit allows for precise control over feature rollout and user targeting, ensuring a seamless deployment process.
FeatBit is designed to streamline feature management, making it easier for developers to innovate and deliver high-quality user experiences.



