I just found the solution to a question that I posed in 2011: Is there a web app that provides a terminal emulator / secure interface to the bash shell? in a Chrome web store app called "secure shell". It says that it uses
hterm, which is defined in the FAQ as:
It is intended to be fast enough and correct enough to compete with native terminals such as xterm, gnome-terminal, konsole and Terminal.app.
hterm is only a terminal emulator. It does not provide SSH access (or any other text-based command) on its own.
Then is the web app just a way to access a terminal emulator through my web browser? Does it provide a secure link between my browser and my server? I gather that the answer is yes, because the FAQ says:
Secure Shell can make a direct connection to a standard sshd server on any port of the destination machine.
but the language is both sufficiently 'technical' and sufficiently vague that confirmation or explanation would be appreciated.