The playground is a suite of tools to simulate, introspect, and play around holochain. It enables developers and architects to see and interact with what's happening behind the scenes.

Here is a link to the github repo:
https://github.com/darksoil-studio/holochain-playground

And here is a link to the actual playground, where you can play around with a network of simulated holochain nodes:
https://darksoil.studio/holochain-playground