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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Flipt
Feature flag solution
Flipt is an open source, self-hostable feature flag and remote configuration platform with GitOps support, enabling teams to control and rollout features, run experiments, segment users and integrate via SDKs.
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Flagsmith
Feature flag management
Flagsmith is an open source feature flag and remote configuration platform that lets you manage and rollout feature flags across web, mobile and server-side applications, run A/B and multivariate tests and segment users, with hosted or self-hosted deployment options.
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Optimizely
Experimentation platform
Optimizely lets teams conduct A/B and multivariate tests, deliver personalized experiences, manage feature flags, and handle content and commerce to optimize digital customer experiences.
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


Flipt
Feature flag solution


Flagsmith
Feature flag management


Optimizely
Experimentation platform


Kameleoon
Feature experimentation


GrowthBook
Feature flag & experimentation platform


LaunchDarkly
Feature experimentation


Posthog
Product analytics toolkit


Unleash
Feature management platform


Statsig
Experimentation platform


FeatBit
Feature flags service


Tggl
Feature flag solution


AB Tasty
Experience optimization platform


Eppo
Experimentation platform