We are currently using Splunk Enterprise. Is there any FREE add-on/app to install on top of the existing Splunk to get more metrics/insight from other vendors like(Cisco, Palo Alto, F5, riverbed)?
The first app linked here is not free, the last two are.
You can tell by the download button becoming a visit site or contact sales button, and by the lack of a free license (e.g. creative commons, apache, etc.) being listed. Concerning pricing, click the button and see where it takes you.