Logstash | Collect, Enrich & Transport Data

Logstash is a tool for managing events and logs. You can use it to collect logs, parse them, and store them for later use (like, for searching). If you store them in Elasticsearch, you can view and analyze them with Kibana.

It is fully free and fully open source. The license is Apache 2.0, meaning you are pretty much free to use it however you want in whatever way.

For more info, see https://www.elastic.co/products/logstash

https://www.elastic.co/products/logstash
https://github.com/elastic/logstash
http://hemingway.softwarelivre.org/fisl16/high/41e/sala_41e-high-201507101700.ogv
http://jasonwilder.com/blog/2013/11/19/fluentd-vs-logstash/