DevBar

A lightweight macOS menu bar monitor built for developer workflows. Surfaces CPU, RAM, and disk usage alongside memory pressure from the tools you actually run — VS Code, Cursor, Chrome, Comet, Python, Claude Code, and terminals — all in one popover.

Features

• Live sparklines on CPU / RAM / Disk — color shifts red on spike, green on recovery
• Developer process groups: Python · IDEs (VS Code, Cursor, Zed…) · Browsers (Chrome, Comet, Arc, Firefox…) · Claude / AI · Terminals · Background
• Click any process group to drill into the top 5 heaviest PIDs
• Proportion bars showing each group's share of total system RAM
• Health dot on the menu bar icon: green / yellow / red based on resource pressure
• Notifications with sound when RAM or CPU cross configurable thresholds
• Configurable menu bar: icon only · CPU% · RAM% · both
• Light / Dark / System theme support

Health state rules

State	Condition
Healthy	CPU < 65% and RAM < 75% and Disk free > 20%
Warning	CPU > 65% or RAM > 75% or Disk free < 20%
Critical	CPU > 85% or RAM > 88% or Disk free < 10%

Install via Homebrew

brew tap 0xcynyx/devbar
brew install --cask devbar

On first launch you may need to allow the app in System Settings → Privacy & Security since it is not notarized.

Manual install

Download DevBar.zip from the latest release, unzip, and move DevBar.app to /Applications.

If macOS blocks the app:

xattr -cr /Applications/DevBar.app

Build from source

Requires macOS 13+, Xcode Command Line Tools.

git clone https://github.com/0xcynyx/devbar
cd devbar
make install          # builds + copies to /Applications

Or step by step:

swift build -c release
bash build.sh
open DevBar.app

Add to Login Items

System Settings → General → Login Items → add DevBar.app.

Requirements

• macOS 13 Ventura or later
• No entitlements or sandboxing — runs fully local, zero network access

License

MIT