As is mentioned in this new post to the Laravel News site, the Homestead development environment now comes with support for the Blackfire.io profiler.

Blackfire Profiler by SensioLabs automatically gathers data about your code's execution, such as RAM, CPU time, and disk I/O. Homestead makes it a breeze to use this profiler for your own applications. All of the proper packages have already been installed on your Homestead box, you simply need to set a Blackfire ID and token in your Homestead.yaml file

With the configuration set up, the only installation the user needs to make is setting up the companion extension (Chrome) for your browser.