Best European Feature Flag & A/B Testing Software

Experimentation platform combining A/B testing, feature flags, and AI personalization for web and app products.

Open-source feature flag platform for managing feature rollouts and progressive delivery at scale.

Open-source feature flag and remote configuration platform with A/B and multivariate testing capabilities.

High-throughput A/B testing and experimentation platform built by former Booking.com engineers for product teams.

Feature flag and remote configuration service with a free tier and all features available on every plan.

Feature flag and release management platform with A/B testing and dead code detection.

German A/B testing platform for web optimization with flat-rate pricing and no traffic limits.

UK-based A/B testing and conversion optimization platform with all features included on every plan.

Romanian A/B testing and CRO platform with customer value analytics for e-commerce teams.