WPTerm is an xterm-like plugin. It can be used to run non-interactive shell commands from the WordPress admin dashboard.
Download: https://wordpress.org/plugins/wpterm/
Dashboard Cleaner allows you to hide any HTML elements from your admin dashboard such as annoying banners, unwanted ads and other nuisances, and basically anything else you want. It works like a DOM inspector: simply point and click on the HTML element you want to hide, select a few options and it's gone!
Download: https://wordpress.org/plugins/dashboard-cleaner/