Package b3 implements the B3 propagator specification as defined at https://github.com/openzipkin/b3-propagation.

Package jaeger implements the Jaeger propagator specification as defined at https://www.jaegertracing.io/docs/1.18/client-libraries/#propagation-format.

Package ot implements the ot-tracer-* propagator used by the default Tracer implementation from the OpenTracing project.