Flagsmith
Flagsmith is an open source feature flag and remote configuration platform that enables development teams to manage feature toggles, run A/B tests, and perform staged rollouts across web, mobile, and backend applications. It provides SDKs for multiple programming languages and frameworks, allowing developers to control application features in real time without redeploying code. The platform supports user trait storage, granular audience segmentation, multivariate testing, and change auditing.
Checked on Nov 3, 2026.
Alternative resources
Open-source feature management and feature flag platform for progressive rollouts, experimentation, and runtime control.
Product development platform combining feature flags, A/B testing, product analytics, and session replay into a single integrated suite.
Warehouse-native experimentation, feature flag management, and product analytics platform for modern engineering and data science teams.