RBTray - Allows almost any program to be minimized to the system tray by right clicking its minimize button.
Mac CLi - OS X command line tools for developers
Minime - Minime is a tool that allows you to minimize applications to the system tray using a simple hotkey.
Phunt - Product Hunt command line interface
4t Tray Minimizer - 4t Tray Minimizer Free/Pro - Minimize Outlook, Internet Explorer, Firefox, Chrome and any other applications to the system tray!
GitHub CLI - Official CLI tool for using GitHub from the command-line.