VMware's Virtual Desktop Manager offers similar functionality as an add-on to VMware VDI, and its upcoming VMware ThinApp will offer application virtualisation to sit side by side with virtual desktops. Desktop management provider Managesoft has tackled a different angle by streamlining management of desktop licensing issues that are created by virtualisation's unchecked desktop proliferation, while Sun Microsystems recently tackled VDI administration with its own Virtual Desktop Connector.