Logstash is an open-source data processing pipeline that ingests, transforms, and outputs logs and events from various sources in real-time. Developers use it to collect data from multiple systems, apply filtering and enrichment rules, and forward the processed results to analytics platforms, search engines, or other destinations. Built with Java and JRuby, it's commonly deployed as part of the Elastic Stack for log aggregation and event streaming workflows.

2,251 open issues · last updated Jul 21, 2026