Fluentd

A high-performance observability data pipeline.

Collects and ships the same sources, with its own transform language.

Fast and Lightweight Logs, Metrics and Traces processor for Linux, BSD, OSX and Windows

From the same project, written in C with a much smaller footprint.

OpenTelemetry Collector

Receives, processes and exports logs, metrics and traces in the OpenTelemetry format.

Other tools in Log pipelines