Vue.js - Reactive Components for Modern Web Interfaces
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Deku - Functional view library for building UI components as an alternative to React
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Polymer - Polymer is a library that uses the latest web technologies to let you create custom HTML elements.
iTerm2 - A terminal emulator for macOS that does amazing things.