The tool is released as Managed Solution, for XrmToolBox (listed inside the Tool Library) or can be loaded inside Dataverse DevTools (VS Code extension).
It is possible to export the requests in a format compatible with the following applications:
Demo: https://guidopreite.github.io/DRB/
Dataverse REST Builder has been shown on The DevConnect Show by Danish Naglekar, you can find the video below
Carl de Souza content about Dataverse REST Builder:
Blog post: Using the Dataverse REST Builder to Build REST Requests