rainbarf
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Description:
CPU/RAM/battery stats chart bar for tmux (and GNU screen)
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: tmux monitoring system-utilities terminal productivity
Install: brew install rainbarf
About:
Rainbarf renders real-time CPU, RAM, and battery usage as a visually appealing ASCII bar chart directly within a tmux or GNU screen status bar. It provides an at-a-glance system overview without leaving the terminal, helping users monitor resource usage during intensive tasks. The tool is lightweight, configurable, and requires no external dependencies.
Key Features:
  • Real-time system monitoring in the terminal
  • Works with both tmux and GNU screen
  • Zero-dependency and lightweight
  • Customizable colors and metrics
Use Cases:
  • Monitoring server resource usage during deployments
  • Tracking system load while running compile jobs
  • Keeping an eye on battery life during mobile development
Alternatives:
  • htop – Provides detailed process management but doesn't integrate into tmux/screen status bars
  • tmux-mem-cpu-load – Similar integration but written in C++ and focuses only on CPU/memory
Version History
Detected Version Rev Change Commit
Sep 14, 2024 2:09am 0 VERSION_BUMP 19d02ca0