* [LaunchDarkly Server-side SDK for Ruby 8.15.1](https://github.com/launchdarkly/ruby-server-sdk) – Server-side Ruby SDK for evaluating feature flags, sending events, and handling flag updates.

* [PostHog Go v1.24.0](https://github.com/PostHog/posthog-go) – Go client library for capturing events, user traits, errors, and evaluating feature flags.