PuTTY is a free and open source SSH and telnet client application for Linux, MacOS and Windows. It also supports Rlogin and SUPDUP protocols. Using PuTTY you can connect and run a remote session on a computer over a network. It comes with SSH2, SSH1, public key authentication, Active Directory and Kerberos authentication, terminal emulation, TCP/IP protocols support and more.
How to Install PuTTY on Ubuntu Linux
PuTTY is available from the Ubuntu universe repository. So first you need to enable Ubuntu universe repository using this command.
sudo add-apt-repository universe
After that run below commands one by one. It will install the latest version of PuTTY app on your system
sudo apt update
sudo apt install putty
You can also open it from the applications menu.
Install PuTTY via flatpak:
Install flatpak and flathub on your system and restart it after the installation. Now in the terminal software run this PuTTY flatpak install command.
flatpak install flathub uk.org.greenend.chiark.sgtatham.putty
After the installation open it using below flatpak command.
flatpak run uk.org.greenend.chiark.sgtatham.putty
You can also uninstall it using
sudo flatpak uninstall uk.org.greenend.chiark.sgtatham.putty