Splunk

Splunk is a data platform for hybrid environments that provides comprehensive observability, unified security, and numerous proprietary applications. The data-centric Security Operations solution makes data of almost any kind and from almost any source accessible and usable for users. The platform searches logs, metrics, and other data from applications, servers, and network devices and indexes them in a searchable repository. Splunk Enterprise offers a free trial. More detailed pricing information is available on the provider's website.