13 Best feature flag tools
Discover software that lets you control releases, experiment safely, and drive continuous improvement.
Featured feature flag tools
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GrowthBook
Feature flag & experimentation platform
GrowthBook is an open-source feature flagging and experimentation platform that lets teams release and target features, run A/B tests, and analyze results using their own data infrastructure.
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Eppo
Experimentation platform
Eppo is a data-warehouse-native experimentation platform that lets teams run statistically rigorous A/B tests, manage feature flags, and generate in-depth experiment reports directly on their existing data warehouse.
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Statsig
Experimentation platform
Statsig is a platform that combines feature flags, A/B testing, product analytics and session replay, allowing teams to experiment on features, analyze results and control rollouts from a single interface.
Selection criteria and key features
- Rollout flexibility:
Can it enable gradual rollouts and staged feature releases?
- Targeting rules:
Does it support detailed targeting for different user segments?
- A/B testing integration:
Can it integrate with A/B testing frameworks for experimental features?
- Flag control:
Does the tool allow granular control over feature toggles across environments?
- Real-time updates:
Does it update feature flags instantly for immediate impact?
- Integration:
Does it integrate seamlessly with CI/CD and development tools?
- Security and compliance:
Does it secure flag data and comply with relevant standards?
- Ease of use:
Is the interface intuitive for developers and product teams?
- Audit logging:
Does it maintain logs of flag changes and rollout history?
All feature flag tools


GrowthBook
Feature flag & experimentation platform


Eppo
Experimentation platform


Statsig
Experimentation platform


AB Tasty
Experience optimization platform


Posthog
Product analytics toolkit


FeatBit
Feature flags service


Optimizely
Experimentation platform


Flagsmith
Feature flag management


Flipt
Feature flag solution


Unleash
Feature management platform


Kameleoon
Feature experimentation


Tggl
Feature flag solution


LaunchDarkly
Feature experimentation