Fluentd

Distributed, reliable, and available service for efficiently collecting, aggregating, and moving...

Log aggregation system designed to store and query logs from all your applications and...

Real-time web log analyzer and interactive viewer that runs in a terminal or through the browser

Rocket-fast system for log processing

Industry standard, high performance data logging and graphing system for time series data

A lightweight daemon that scans program outputs for repeated patterns, and takes action