mRemoteNG - mRemoteNG is a fork of mRemote, an open source, tabbed, multi-protocol, remote connections manager.
Cygwin - Cygwin is a set of tools that provide Linux and POSIX functionality to Windows.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
PowerShell - Download WMF. Windows Management Framework contains the latest versions of PowerShell, DSC, WMI, and WinRM for older versions of Windows. PowerShell Module Browser. Search for PowerShell modules and cmdlets.
Royal TS - Royal TS provides easy and secure access to your remote systems
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more