term.js
A terminal written in javascript
...It was designed to bring interactive terminal behavior into the browser and was used by tty.js for web-based terminal sessions. The project includes server and client examples that connect browser terminal input and output through sockets. It supports terminal dimensions, screen keys, title events, terminal writing, data events, destruction on disconnect, and familiar xterm behavior. It also includes keyboard-driven tmux-like selection and copy-paste workflows in addition to mouse selection. The repository is no longer maintained, but it remains an important reference for browser terminal emulation and early JavaScript terminal UI work.