OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Bitvise SSH Server (WinSSHD) - WinSSHD is our SSH server for all Windows NT-series operating systems.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Dropbear SSH Server and Client - Dropbear is a relatively small SSH 2 server and client.
iTerm2 - A terminal emulator for macOS that does amazing things.