Flipt is an open-source feature flag management (feature management) platform that can be self-hosted, designed to decouple code deployment from feature activation. It allows exposing a new feature to a subset of users, performing progressive deployments (percentage-based rollout), A/B testing, and instantly disabling a faulty feature — all without a new application deployment.

Flipt relies on segments and targeting rules based on your users' attributes, offering both boolean flags and multi-variant flags. Its configuration can be managed via a clear web interface or entirely declaratively in YAML, versioned in Git for a GitOps approach.

On the integration side, Flipt exposes high-performance REST and gRPC APIs, as well as official SDKs in many languages for server-side or client-side evaluation. Lightweight, written in Go, and distributed as a container, it works equally well with an integrated SQLite database or with PostgreSQL for the most demanding use cases.