SYGNin, part of the SYGNAL broadcast toolkit, is a terminal for everything with a command line: switches, Raspberry Pis, routers and consoles, over SSH, telnet and serial, with files, box status and switch settings beside it.

SYGNin has its own window and Dock icon. It doesn't start at login unless you turn on Start at login in toolbox. Your logins stay in Keychain.

Installing doesn't end open sessions. If SYGNin is running, restart it from toolbox to finish the update.