btop

What is btop?

btop is a modern rewrite of the popular htop‑based tool bpytop, written in C++ for speed and low resource use. It first appeared in 2020 and has quickly become the go‑to monitor for Linux users who prefer a colorful, interactive terminal interface. The project is actively maintained on GitHub with frequent updates.

The tool is aimed at power users, developers, and sysadmins who need instant visibility into system resources without leaving the shell. It replaces the need for graphical utilities like Wise Memory Optimizer by providing real‑time statistics and process control.

Compared to the Windows tools, btop feels more lightweight and responsive. It offers a richer set of visual graphs, keyboard shortcuts, and the ability to drill down into individual processes—all within a terminal window. The learning curve is minimal if you’re already comfortable with terminal navigation.

Best for: Users who need a quick, terminal‑based system monitor with full process control.

Key features of btop

• Real‑time CPU, memory, disk, and network graphs
• Process tree view with sorting and filtering
• Keyboard shortcuts for killing, renicing, and pinning processes
• Customizable color schemes
• Export data to CSV
• Supports multiple terminals (tmux, screen)

Tips for Windows users

If you’re coming from Wise Memory Optimizer, you’ll find that btop does not directly free memory but shows you which processes consume RAM, allowing you to kill or renice them manually. There are no file format differences; you simply run btop from a terminal. Keyboard shortcuts like F9 to kill a process or F5 to refresh replace the GUI buttons you used in Windows. Workflow shifts from a mouse‑driven interface to keyboard navigation, but the data displayed is comparable.