Mage.coach is a set of Open Source tools that helps make your Magento web pages faster.
It help you to get a better overview of all frontend optimisation details and how to fix them.
Mage.coach is a project create by and for the Magento community to improve the quality of the code.
At the MM17BE session we look under need the hood of this project and how it can help you.
More details on the project: