Visit the Sankey documentation here: https://docs.splunk.com/Documentation/SankeyDiagram/1.6.0/SankeyDiagramViz/SankeyIntro
As a Splunkbase app developer, you will have access to all Splunk development resources and receive a 10GB license to build an app that will help solve use cases for customers all over the world. Splunkbase has 1000+ apps from Splunk, our partners and our community. Find an app for most any data source and user need, or simply create your own with help from our developer portal.