Putty is one of the oldest SSH client for windows, but out there many other SSH client for Windows, I’ll list the alternative for Putty here
1. Bitvise Tunnelier
Tunnelier is an SSH and SFTP client for Windows. Tunnelier is robust, easy to install, easy to use, and supports all features supported by PuTTY, as well as the following:
graphical SFTP file transfer;
single-click Remote Desktop tunneling;
dynamic port forwarding through an integrated proxy;
an FTP-to-SFTP protocol bridge.
MobaXterm is an enhanced terminal for Windows with an X11 server, several network tools for remote computing and all the essential Unix commands packaged into a single portable exe file.