- language: JavaScript
  library: >-
    [zipkin-js](https://github.com/openzipkin/zipkin-js)
  framework: >-
    [cujoJS](http://cujojs.com), [express](http://expressjs.com/), [restify](http://restify.com/)
  propagation: Http (B3)
  transports: >-
    [Http \\| Kafka \\| Scribe](https://github.com/openzipkin/zipkin-js#transports)
  sampling: >-
    Yes
  notes: >-
    Uses continuation-local-storage under to hood, so you don't have to pass around an explicit context

- language: Python
  library: >-
    [pyramid_zipkin](https://github.com/Yelp/pyramid_zipkin)
  framework: >-
    [Pyramid](http://docs.pylonsproject.org/projects/pyramid/en/latest/)
  propagation: Http (B3)
  transports: >-
    [Kafka \\| Scribe](http://pyramid-zipkin.readthedocs.org/en/latest/configuring_zipkin.html#zipkin-transport-handler)
  sampling: >-
    [Yes](http://pyramid-zipkin.readthedocs.org/en/latest/configuring_zipkin.html#zipkin-tracing-percent)
  notes: py2, py3 support.

- language: Java
  library: >-
    [brave](https://github.com/openzipkin/brave)
  framework: Jersey, RestEASY, JAXRS2, Apache HttpClient, Mysql
  propagation: Http (B3), gRPC (B3)
  transports: Http, Kafka, Scribe
  sampling: "Yes"
  notes: Java 6 or higher

- language: Java
  library: >-
    [htrace](https://github.com/apache/incubator-htrace/tree/master/htrace-zipkin)
  framework: HDFS, HBase
  propagation: 
  transports: Http, Scribe
  sampling: "Yes"
  notes: Java 7 or higher

- language: Java
  library: >-
    [Spring Cloud Sleuth](https://github.com/spring-cloud/spring-cloud-sleuth)
  framework: Spring, Spring Cloud (e.g. Stream, Netflix)
  propagation: Http (B3), Messaging (B3)
  transports: Http, Spring Cloud Stream Compatible (e.g. RabbitMQ, Kafka, Redis or anything with a custom Binder)
  sampling: "Yes"
  notes: Java 7 or higher
  
- language: Scala
  library: >-
    [finagle-zipkin](https://github.com/twitter/finagle/tree/develop/finagle-zipkin) 
  framework: >-
    [Finagle](https://github.com/twitter/finagle)
  propagation: Http (B3), Thrift
  transports: Scribe
  sampling: "Yes"

- language: Ruby
  library: >-
    [zipkin-tracer](https://github.com/openzipkin/zipkin-tracer) 
  framework: >-
    [Rack](http://rack.github.io/)
  propagation: Http (B3)
  transports: Http, Kafka, Scribe
  sampling: "Yes"
  notes: lc support. Ruby 2.0 or higher

- language: "C#"
  library: >-
    [ZipkinTracerModule](https://github.com/mdsol/Medidata.ZipkinTracerModule) 
  framework: OWIN, HttpHandler  
  propagation: Http (B3)
  transports: Http
  sampling: "Yes"
  notes: lc support. 4.5.2 or higher

- language: Go
  library: >-
    [go-zipkin](https://github.com/elodina/go-zipkin)
  framework: x/net Context
  propagation:
  transports: Kafka
  sampling: "Yes"

- language: Go
  library: >-
    [Go kit](https://github.com/go-kit/kit)
  framework: Go kit
  propagation: Http (B3), gRPC (B3)
  transports: Kafka, Scribe
  sampling: "Yes"

- language: Scala
  library: >-
    [akka-tracing](https://github.com/levkhomich/akka-tracing)
  framework: >-
    [Akka](https://akka.io), [Spray](https://spray.io), [Play](https://www.playframework.com)
  propagation: Http (B3), Thrift
  transports: Scribe
  sampling: "Yes"
  notes: Java 6+, Scala 2.10+, activator templates for [Akka](https://github.com/levkhomich/activator-akka-tracing) and [Play](https://github.com/levkhomich/activator-play-tracing)

- language: Java
  library: >-
    [Dropwizard Zipkin](https://github.com/smoketurner/dropwizard-zipkin)
  framework: >-
    [Dropwizard](http://www.dropwizard.io)
  propagation: Http (B3), Thrift
  transports: Http, Scribe
  sampling: "Yes"
  notes: Java 7 or higher

- language: Java
  library: >-
    [Wingtips](https://github.com/Nike-Inc/wingtips)
  framework: >-
    [Any Servlet API framework](https://github.com/Nike-Inc/wingtips/tree/master/wingtips-servlet-api), 
    [roll-your-own](https://github.com/Nike-Inc/wingtips#generic-application-pseudo-code), 
    [async framework support](https://github.com/Nike-Inc/wingtips#usage-in-reactive-asynchronous-nonblocking-scenarios)
  propagation: Http (B3)
  transports: Http
  sampling: "Yes"
  notes: Java 7 or higher, [SLF4J MDC support](https://github.com/Nike-Inc/wingtips#mdc_info) for auto-tagging all log messages with tracing info