What is the difference between vSphere Client and vSphere web client ?

vSphere Client is traditional utility which provides user interface to vCenter server. But from VMware vSphere 5 onwards,vSphere web client   is a primary interface to manage vCenter server.For vSphere client, you need install small utility .But vSphere Web client doen’t require any software. You can directly connect using web browser.But still VUM is managed through vSphere Client .