KDE Wallet
In KDE Plasma, the KDE Wallet is responsible for securely storing and supplying user credentials to the various KDE applications that request them. It is unlocked when you log in.
Plasma System Monitor
Plasma System Monitor, also known as KSysGuard or KDE System Guard, is designed to make simple process control available to a user without needing to do any special setup.
SSH
Solus uses OpenSSH for remote login over the SSH protocol.