FFlags

What is FFlags?

FFlags is an open-source feature flagging service designed for developers who need enterprise-grade performance without vendor lock-in or lengthy implementation timelines. Built as an OpenFeature-compliant solution, FFlags allows teams to define feature flag logic directly in TypeScript, treating flags as code rather than configuration stored in external systems. The platform delivers sub-25ms wall-time performance, making it suitable for latency-sensitive applications. It targets development teams seeking a middle ground between building custom flag systems and adopting heavyweight enterprise solutions. FFlags integrates with existing development workflows through code-based flag definitions, enabling version control and standard CI/CD processes. Key characteristics include OpenFeature compliance for standardized flag evaluation, TypeScript-based flag logic for type safety and developer familiarity, and self-hosted deployment options to avoid vendor dependencies. The service offers a free tier, making it accessible for small teams and projects while supporting scaling to production workloads. FFlags is particularly suited for teams that value performance, control over their flagging infrastructure, and the ability to keep flag logic alongside their application code.