Elk opensource or not

Elastic Stack Elasticsearch
1

Hi ,

I would like to understand is the elk stack opensource or not.

There are lot tools in the stack it seems what are opensource and what are not?

2

ELK means Elasticsearch Logstash and Kibana.

Both 3 are open source under Apache 2 License.

3

We have some plugins that are commercial, ie not free. These are Shield, Marvel and Watcher.

4

There is also an Elasticsearch-Hadoop connector and a collection of Beats that are all open source under the Apache 2.0 license.