Hypertune

We're building the most flexible and developer-friendly platform for feature flags, A/B testing and "application configuration". See https://docs.hypertune.com for more details. At the core of Hypertune is a visual, functional, statically-typed programming language with first-class citizens for analytics, A/B testing and machine learning. Our UI lets users define their configuration logic in this language and our SDKs act as interpreters, evaluating the logic locally on clients with zero network latency.