
Server-side feature flagging, A/B testing, and experimentation platform
VWO FullStack (now VWO Feature Management & Experimentation) is a server-side experimentation platform from Wingify that lets engineering and product teams deploy features independently of releases, run A/B tests on any platform, and deliver personalized experiences — all without deploying new code.
Decouple deployment from release by turning features on or off at runtime without code changes
Release features to 1%, 10%, or 100% of users incrementally to manage risk
Test algorithms, search ranking, pricing logic, and checkout flows on the backend
Pause or revert feature releases immediately if metrics degrade with guarded releases
Target users by ID, device, OS, geography, feature flag status, or custom attributes
Deliver different feature variations to specific user segments for tailored experiences
Support for Node.js, PHP, Python, Go, Ruby, Java, iOS, Android, and more
A/B test search algorithms, recommendation engines, and checkout flows to optimize conversion rates
Gradually release new features to subscription users with percentage-based rollouts and instant rollback
Control feature availability on iOS and Android without waiting for app store review cycles
Test database queries, API logic, and microservice changes safely with server-side experiments

DIY market research with mobile-first audience and pay-per-response pricing

Event-based product analytics with session replay and experimentation

AI-powered digital analytics for understanding user behavior and product optimization

Open source feature flags and A/B testing platform
Start using VWO FullStack today and boost your productivity.
Visit WebsiteManage features across development, staging, and production environments
Test multiple variables simultaneously to find optimal combinations on higher plans
Full API access for programmatic feature management and experiment orchestration
Shift traffic slowly during major platform migrations with instant rollback if issues arise

The runtime control plane for feature management and experimentation