Telegraf is an agent for collecting metrics and writing them to InfluxDB or other outputs.

Kibana gives shape to any kind of data — structured and unstructured — indexed in Elasticsearch.

Logstash is a tool for managing events and logs.

Chronograf is a visualization tool for time series data in InfluxDB.

Matomo is the leading open-source analytics platform that gives you more than powerful analytics.

Kapacitor is an open source framework for processing, monitoring, and alerting on time series data.

Fluentd is an open source data collector for unified logging layer