Flagsmith

Flagsmith helps engineering teams ship faster and continuously improve digital products with feature flags and remote config. Fully open-source, Flagsmith can be hosted on Flagsmith cloud, deployed on private cloud, or run on-premise. The platform lets teams manage feature flags across web, mobile, and server-side applications — decoupling deployment from release so teams can deliver true continuous integration, control who has access to new features, and execute staged rollouts and A/B testing. Flagsmith combines feature toggles with the flexibility of remote config, allowing teams to configure features for individual user segments, development environments, and roles via a powerful rules engine. Founded in 2018 by Ben Rometsch, the company is headquartered in London and serves development teams across enterprise and startup environments.