3. Go StdlibOpenTracing instrumentation for packages in the Go stdlib
4. Java SpecialagentAutomatic instrumentation for 3rd-party libraries in Java applications with OpenTracing.
9. Java Jfr TracerThis is a delegating tracer to be used with OpenTracing. It records span information into the JFR, allowing very deep tracing.
18. metaA meta-repository for OpenTracing contributions
24. go-grpcPackage otgrpc provides OpenTracing support for any gRPC client or server.