Their are several products that VW Ware offers. There are products for first time virtualization users, for enterprise users, technical and programmers and products for locking down the desktop and as well as management.
For Servers there is VM Ware Server -----> VM Ware Infrastructure
For desktops there is VMWare player. You can run virtual machines on any machine. These are free downloads.
Virtual Manager allows you to create virtual machines.
VM Workstation allows developers to run multiple virtual machines for software development.
VMWare Ace is used on desktop for security, it can be used to lock down endpoints.
VMWare Infrastructure.
ESX Server is the flagship or foundation for distributed virtualization. ESX server takes care of managing memory, hardware, networking and splits them up into virtual machines. Virtual center gives you a birds eye view of your virtual machines. It also handles workloads, optimizing and it has templates.
There are several add-ons for ESX server.
VM Ware is great for Malware analysis. You can view and run the source code in the vitual machines in a controlled enviroment. There are Anti-Virus companies that use VMware and software debugging tools such as Soft Ice to look into worms and see what there are meant to do. What worms, viruses and othe Malware is contained in the payload.