If you've heard of VMWare and virtualization, you might be confused when you visit VMWare and see 100 different products offered. I know I am. If you're a web developer and want to easily cut through the noise, use VirtualBox by Oracle. It's an open source alternative for virtualization and it does pretty much anything you need as a web developer that wants to spin up an environment for testing on your own computer. It also works on both Windows and Mac computers.
I recently used VirtualBox on a project and was pleased with its simplicity. It's a great way to install and develop on a Bitnami stack in a similar environment to your production server.