bottom

bottom is a customizable cross-platform graphical process and system monitor for the terminal, inspired by gtop, htop, and finally Windows Task Manager. Written in Rust by Clement Tsang, bottom has over 10,200 stars as of 2026 and provides a rich, interactive system monitoring experience directly in the terminal. Key features include: real-time visualization of CPU usage (per-core and average with configurable graph types: line, histogram, or both), memory usage (RAM and swap with usage breakdown), network activity (download and upload rates with total data transferred), disk I/O (read and write speeds per device), temperature sensors (CPU, GPU, and other hardware sensors with configurable units), process table (sortable by any column, with filtering and search, displaying PID, name, CPU usage, memory usage, user, disk read/write, and state), widget-based layout (drag and drop to rearrange, configurable via a TOML configuration file), customizable themes and colors, keyboard shortcuts for all actions, mouse support (clicking to select processes, scrolling in widgets), tree view for process hierarchies, process killing capability (sending signals to selected processes), container support (showing Docker container processes), GPU monitoring (for NVIDIA GPUs via NVML), battery status (for laptops), and cross-platform support (Linux, macOS, and Windows). bottom is designed to be a feature-rich alternative to htop and btop with a more modern, widget-based interface.