Merge pull request #71 from prometheus/mention-integrations

Mention more third-party exporters and integrations.

content/docs/instrumenting/exporters.md

 ---
-title: Exporters for third-party systems
+title: Exporters and third-party integrations
 sort_rank: 3
 ---
 
-# Exporters for third-party systems
+# Exporters and third-party integrations
 
 There are a number of libraries and servers which help in exporting existing
 metrics from third-party systems as Prometheus metrics. This is useful for
 cases where it is not feasible to instrument a given system with Prometheus
-metrics directly (for example, HAProxy or Linux system stats). The
-following is a list of existing third-party exporters:
+metrics directly (for example, HAProxy or Linux system stats).
+
+## Official third-party exporters
+
+These exporters are maintained as part of the official
+[Prometheus GitHub organization](https://github.com/prometheus):
 
    * [Node/system metrics exporter](https://github.com/prometheus/node_exporter)
    * [Graphite exporter](https://github.com/prometheus/graphite_exporter)
@@ -25,3 +29,30 @@ following is a list of existing third-party exporters:
 The [JMX exporter](https://github.com/prometheus/jmx_exporter) can export from a
 wide variety of JVM-based applications, for example [Kafka](http://kafka.apache.org/) and
 [Cassandra](http://cassandra.apache.org/).
+
+## Unofficial third-party exporters
+
+There are also a number of exporters which are externally contributed and
+maintained. Note that these may have not been vetted for best practices by the
+Prometheus core team yet:
+
+   * [RethinkDB exporter](https://github.com/oliver006/rethinkdb_exporter)
+   * [Redis exporter](https://github.com/oliver006/redis_exporter)
+   * [scollector exporter](https://github.com/tgulacsi/prometheus_scollector)
+   * [MongoDB exporter](https://github.com/dcu/mongodb_exporter)
+   * [Django exporter](https://github.com/korfuri/django-prometheus)
+   * [Google's mtail log data extractor](https://github.com/google/mtail)
+   * [Minecraft exporter module](https://github.com/Baughn/PrometheusIntegration)
+   * [Meteor JS web framework exporter](https://atmospherejs.com/sevki/prometheus-exporter)
+
+## Directly instrumentated software
+
+Some third-party software already exposes Prometheus metrics natively, so no
+separate exporters are needed:
+
+   * [cAdvisor](https://github.com/google/cadvisor)
+   * [Kubernetes](https://github.com/GoogleCloudPlatform/kubernetes)
+   * [Kubernetes-Mesos](https://github.com/mesosphere/kubernetes-mesos)
+   * [Etcd](https://github.com/coreos/etcd)
+   * [gokit](https://github.com/peterbourgon/gokit)
+   * [go-metrics instrumentation library](https://github.com/armon/go-metrics)