PuTTY - Popular free terminal application. Mostly used as an SSH client.
Inferno - An extremely fast React-like javascript library for building modern user interfaces.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Preact.js - Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.
iTerm2 - A terminal emulator for macOS that does amazing things.
w2ui - W2UI is a small JavaScript UI library with a complete set of widgets: layout, grid, sidebar, toolbar, tabs, fields, popup, utilities.