https://github.com/theogravity/feature-manager-wrapper
Edit: It looks like it's a backend replacement to LaunchDarkly, but you can still use the LD client from what I'm reading here, so there's nothing for me to integrate here.
For instance, here are is the repo for contributed Providers in Go: https://github.com/open-feature/go-sdk-contrib/tree/main/pro...
And here is LaunchDarkly's official Java OpenFeature provider: https://github.com/launchdarkly/openfeature-java-server
https://github.com/theogravity/feature-manager-wrapper
Edit: It looks like it's a backend replacement to LaunchDarkly, but you can still use the LD client from what I'm reading here, so there's nothing for me to integrate here.