While I personally would trust the Koding folks to be responsible with my credentials/SSH sessions, if you want a terminal in your browser using a server that y

While I personally would trust the Koding folks to be responsible with my credentials/SSH sessions, if you want a terminal in your browser using a server that you control why not use Gate One? (https://github.com/liftoff/GateOne https://github.com/liftoff/GateOne) It'll let you run whatever terminal app you like (defaults to SSH w/advanced features like session duplication). Full disclosure: I am the author of Gate One.