Why btop Beats top and htop for Real‑Time System Monitoring

Linux and macOS users often need to view per‑process CPU usage, memory consumption, and other metrics; the traditional top command is ubiquitous but can be unfriendly for beginners. This guide compares top with its more interactive successors htop and btop, and explains why many users now prefer btop.

top

top

is a standard Unix/Linux utility that dynamically displays processes, sortable by CPU or memory usage. It is pre‑installed on most systems, which makes it convenient despite its terse, keyboard‑driven interface.

htop

htop

improves on top by adding colour‑coded fields, horizontal scrolling, and mouse‑friendly navigation. Users can select processes with arrow keys and send signals (e.g., SIGKILL) directly. However, htop requires separate installation.

btop

btop

(officially btop++) is a C++‑based, visually appealing replacement for both top and htop. It offers colour themes, four preset layouts, and extensive keyboard shortcuts for quick module toggling and sorting.

Installation

btop runs on most Unix‑like systems. On macOS it can be installed with a single Homebrew command: brew install btop After installation, launch it simply by typing btop in the terminal.

Interface Overview

When started, btop shows a “preset” screen that combines four modules. Press p to cycle through presets 0‑3. Each preset is just a different arrangement of the same four modules.

preset 0

preset 1

preset 2

preset 3

Modules

The four core modules are CPU, Storage, Network, and Process. They can be shown or hidden with the number keys 1‑4.

CPU Module

Displays CPU model, per‑core usage, temperature, overall load, and a real‑time graph.

Storage Module

Shows both memory and disk usage in a compact visual format.

Network Module

Provides overall network load and throughput, with separate views for each network interface. Switch interfaces with b and n.

Process Module

Lists processes with columns such as PID, program name, command path, thread count, user, memory usage, and CPU percentage.

pid

Program: process name

Command: execution path

Threads: number of threads

User: owner

MemB: memory used

Cpu%: CPU share

Key Shortcuts

Common shortcuts include: 1 ‑ 4: toggle CPU, Storage, Network, Process modules e: tree view for processes r: reverse/normal sorting f: filter by keyword (e.g., type chrome to see only Chrome processes) k: kill selected process (prompts for confirmation) m → OPTIONS → Color theme: change UI theme

Theming and Configuration

The default theme is Default. Additional themes can be downloaded from the GitHub repository and placed in $HOME/.config/btop/themes. The configuration file resides at $HOME/.config/btop and can be edited to customise presets, colours, and other parameters.

Conclusion

After switching to btop, many users find they no longer need top or htop because of its richer visual feedback, extensive shortcuts, and easy theming. The tool is lightweight, requires only a single installation step on macOS, and works across most Unix‑like platforms.