DomTerm

From 35C3 Wiki

The domterm application is terminal emulator, REPL console, and screen multiplexer (like tmux or GNU screen).

The domterm command runs a server that manages sessions (usually shell processes). The user interface and terminal emulation is handled by a JavaScript library that can run in a regular web browser or an embedded browser such as Electron. Communication between the server and the UI is done with Web Sockets.