onWatch is a free, open-source CLI tool that tracks Synthetic, Z.ai, and Anthropic (Claude Code) API quota usage in real time.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Mac
- Linux
- Windows
- Docker




Claude Usage is described as 'A lightweight macOS menubar app that displays your Claude Code usage limits at a glance' and is an app. There are six alternatives to Claude Usage for Mac, Windows, Linux and Docker. The best Claude Usage alternative is onWatch, which is both free and Open Source. Other great apps like Claude Usage are Usage for claude, Usage4Claude, ClaudeCodeMonitor and AIQuotaBar.
onWatch is a free, open-source CLI tool that tracks Synthetic, Z.ai, and Anthropic (Claude Code) API quota usage in real time.




Monitor your Claude subscription usage from your menu bar. Track session & weekly limits with beautiful widgets. Never hit limits unexpectedly.






A lightweight macOS menu bar application that monitors and manages Claude Code instances in real-time. Keep track of multiple Claude sessions, their resource usage, and running processes - all from your menu bar.

See your Claude.ai and ChatGPT usage limits live in your macOS menu bar — zero setup, reads browser cookies automatically.
