* [GO Feature Flag v1.52.0](https://github.com/thomaspoignant/go-feature-flag) – Lightweight, self-hosted feature-flag server and SDK ecosystem for evaluating and managing feature flags across languages.

* [Flagsmith v2.222.3](https://github.com/Flagsmith/flagsmith) – Feature flag and remote config service for managing feature toggles across applications.

* [Unleash Client SDK for Node.js v6.11.1](https://github.com/Unleash/unleash-node-sdk) – Node.js SDK for integrating with a feature management platform to evaluate feature flags server-side.

* [LaunchDarkly Relay Proxy v8.17.4](https://github.com/launchdarkly/ld-relay) – Proxies a single streaming connection to multiple local clients for feature-flag SDKs and optionally forwards analytics events.

* [GO Feature Flag cmd/wasm/v0.2.1](https://github.com/thomaspoignant/go-feature-flag) – Lightweight, self-hosted feature-flag server and SDK ecosystem for evaluating and managing feature flags across languages.

* [GO Feature Flag modules/core/v0.6.1](https://github.com/thomaspoignant/go-feature-flag) – Lightweight, self-hosted feature-flag server and SDK ecosystem for evaluating and managing feature flags across languages.