Veeam FastSCP

Veeam FastSCP can copy files over 6 times faster than WinSCP and other SCP-based tools as it uses full network capacity.

The Veeam FastSCP engine also features traffic compression and empty block removal for best file copy performance.
Veeam FastSCP uses SSH as a control channel to generate a one-time username and password for each file transfer session. Veeam FastSCP does not require putting ESXi into “unsupported” mode or compromise its security by enabling additional services.
Veeam FastSCP has a Windows Explorer-like user interface familiar to any Windows user. Just run it on your Windows machine and start copying – it doesn’t require any additional ESX or ESXi reconfiguration.