Fluent Bit is a fast Log Processor and Forwarder for Linux, Windows, Embedded Linux, MacOS and BSD family operating systems. It's part of the Graduated Fluentd Ecosystem and a CNCF sub-project.

Fluent Bit allows to collect log events or metrics from different sources, process them and deliver them to different backends such as Fluentd, Elasticsearch, Splunk, DataDog, Kafka, New Relic, Azure services, AWS services, Google services, NATS, InfluxDB or any custom HTTP end-point.

Fluent Bit comes with full SQL Stream Processing capabilities: data manipulation and analytics using SQL queries.