ImageOptim - Faster web pages and apps.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
iTerm2 - A terminal emulator for macOS that does amazing things.