title: Existing instrumentations weight: 3

Tracing information is collected on each host using the instrumented libraries and sent to Zipkin. When the host makes a request to another application, it passes a few tracing identifiers along with the request to Zipkin so we can later tie the data together into spans.

The following libraries exist to provide instrumentation on various platforms. Please refer to their individual documentation for setup and configuration guides.

| Language | Library | Framework | Propagation Supported | Transports Supported | Sampling Supported? | Other notes | |:---------|:--------|:----------|:----------------------|:---------------------|:--------------------|:------------|{% for lib in site.data.existing_instrumentations %} | {{ lib.language }} | {{ lib.library }} | {{lib.framework}} | {{ lib.propagation }} | {{ lib.transports }} | {{ lib.sampling }} | {{ lib.notes }} |{% endfor %} {: .wide-table}

Did we miss a library? Please open a pull-request to openzipkin.github.io.

Want to create instrumentation for another framework or platform? We have documentation on [instrumenting a library]({{ site.github.url }}/pages/instrumenting).