Database

"ConfigCat: feature flags and remote config with percentage rollouts, targeting rules, config-as-code, and cross-platform SDKs"

"Flagsmith: open-source feature flags, remote config, segments, environments, audit logs, self-hosted, REST API"

"Flipt: open-source, self-hosted feature flag platform with GitOps support, boolean and multivariate flags, and GRPC/REST APIs"

"GrowthBook: open-source feature flags, A/B testing, Bayesian statistics, SDK, targeting, webhooks, self-hosted"

"LaunchDarkly: feature flags, targeting rules, segments, experiments, metrics, Node/React SDK, bootstrap, streaming"

"Split.io: feature delivery platform with feature flags, targeting, experimentation, traffic allocation, and metrics integration"

"Statsig: feature gates, dynamic config, experiments/A/B tests, metrics, layers, Next.js SDK, server/client evaluation"

"Unleash: open-source feature flag management with activation strategies, variants, constraints, self-hosted or managed"