Best Feature Flags Tools

Flagsmith

4.2 rating

Open-source feature flag and remote config service with on-premise and cloud options, built for teams needing flexible feature management.

GrowthBook

4.2 rating

Open-source feature flagging and A/B testing platform designed for data-driven teams, with warehouse-native experimentation support.

Harness

4.4 rating

Enterprise-grade software delivery platform with AI-powered CI/CD, feature flags, cloud cost management, and security testing in a unified platform.

LaunchDarkly

4.4 rating

Enterprise feature management platform for controlling feature rollouts, running experiments, and managing feature flags at scale across teams.

Optimizely

4.2 rating

Enterprise experimentation platform for A/B testing, feature flagging, and content management at scale.

Split

4.4 rating

Feature delivery platform combining feature flags with real-time monitoring and experiment analytics to minimize risk during deployments.

Statsig

4.2 rating

Product experimentation platform providing feature flags, A/B testing, and analytics with generous free tier for startups.