Depending on which level of the VMware Infrastructure Suite that you purchase, you may or may not get a variety of add-ons for ESX Server (such as SVMotion, VCB, VMHA, and DRS). But what other add-ons are available for VMware ESX Server and the VMware Infrastructure Suite?
As ESX Server is a very mature product, there are many 3rd party products available for ESX Server. For an excellent list of these products, visit the VirtualizationAdmin.com Software Index.