Bonito is (or will be) a web-ui for the Packetbeat monitoring system.
It is meant to be used as a complementary to Kibana for visualizing the performance data collected by Packetbeat and indexed in Elasticsearch.
Unlike Kibana, Bonito relies on a given structure for the data and has a focus on visualisations for performance management. Like Kibana, it is very configurable with regards to the specifics of the data, like the field names.