No specific info about version 21.3. Please visit the main page of Remote for Win on Software Informer.
Radmin is a remote access software solutions designed for Windows.
Control remote computers running on Windows, Linux, and Mac OSX.
Configure and manage multiple remote connections, and share them between users.
It's a remote control program that lets you control another computer.
Centralized remote management and monitoring security solution.
Win+Ctrl+7 is the smart way to turn your Windows Phone 7 into the remote control