The HTML5 client rapidly matured through vSphere 6.7 and 7.0, achieving full feature parity with the deprecated Flash client. VMware also introduced a unified appliance—the vCenter Server Appliance (VCSA)—with an embedded HTML5 interface. By vSphere 7.0, the Flash client was entirely removed, and the legacy .NET client was officially unsupported.
The thick client was a product of its time: feature-complete, responsive, and reliable over local area networks. It provided a hierarchical tree view of the inventory—datacenters, clusters, hosts, and virtual machines (VMs). Administrators could perform nearly every task from this single application: powering on VMs, editing hardware settings (CPU, memory, disks), configuring networking, managing storage datastores, and even accessing a VM’s console via VNC or MKS (Mouse-Keyboard-Screen) protocols. vmware client
In the modern data center, virtualization is not merely a technology but a foundational principle. At the heart of this virtualized world lies VMware, a pioneer whose software-defined approach to compute, storage, and networking has reshaped enterprise IT. Central to this ecosystem is the concept of the "VMware client." However, this term is not monolithic. It has evolved over two decades, spanning thick desktop applications, web-based interfaces, command-line tools, and RESTful APIs. To understand the VMware client is to understand the shifting paradigms of IT administration itself: from the direct management of individual servers to the orchestration of global, hybrid cloud infrastructures. The Era of the Thick Client: VMware Infrastructure Client (VIC) For a generation of system administrators, the original "VMware client" meant the VMware Infrastructure Client (VIC) , later rebranded as the vSphere Client . Built on Microsoft's .NET Framework, this thick client was the primary interface for managing ESX and ESXi hosts, as well as vCenter Server, from the early days of VMware ESX 2.x through vSphere 4.x and into the early vSphere 5.x releases. The HTML5 client rapidly matured through vSphere 6