The Slack Audit App for Splunk provides interactive searches and visualizations for monitoring what is happening in your Enterprise Grid organization. It works in conjunction with the Slack Add-on for Splunk, which is used to retrieve Slack Audit logs for your organization.

While this app is not formally supported, the developer can be reached at gsa-request@splunk.com. Responses are made on a best-effort basis. Feedback is always welcome and appreciated!
Learn more about splunk-usergroups slack here: https://docs.splunk.com/Documentation/Community/current/community/Chat#Join_us_on_Slack