Cool Retro Term is a free and open source terminal emulator for Linux and MacOS. It mimics the old cathode tube monitor screen in look and feel. It is lightweight and customizable terminal emulator. It is qt based and uses QML port of qtermwidget. You can change the colors, fonts, and effects using the setting menu. It is really cool and fun terminal. It comes with Monochrome green, green scanlines, pixelated, apple II, IBM DOS and IBM 3278 themes.