This is an example of a conky theme written by me. Some scripts may not work very well. Feel free to fork or alter it from GitHub

Conky is a free software desktop system monitor for the X Window System. It is available for Linux, FreeBSD, and OpenBSD. Conky is highly configurable and is able to monitor many system variables including the status of the CPU, memory, swap space, disk storage, temperatures, processes, network interfaces, battery power, system messages, e-mail inboxes, Arch Linux updates, many popular music players, weather updates, breaking news, and much more. Unlike system monitors that use high-level widget toolkits to render their information, Conky is drawn directly in an X window. This allows it to be configured such that it consumes relatively few system resources.

gotop is a terminal-based (TUI) system monitor for Linux and macOS. The software is inspired by gtop and vtop, but while these 2 utilities use Node.js, gotop is written in Go. The command line tool supports mouse clicking and scrolling, comes with vi-keys, and it displays the CPU, memory and network usage history using colored graphs, while also displaying their current values.