Quick answer
OpenUsage is a free menu bar app that needs macOS 15 or later, and its maintainers have declined Windows and Linux builds. On those systems, UsageAtlas tracks Claude Code, Codex, Cursor, Copilot, and 10 more tools for free.
What OpenUsage covers
OpenUsage is an MIT-licensed universal Mac app for 11 providers, including Claude, Codex, Cursor, and Copilot. Two community projects, pane and crossusage, try to bring it to other systems. Neither is an official build.
OpenUsage and UsageAtlas side by side
| OpenUsage | UsageAtlas | |
|---|---|---|
| Platforms | macOS 15+ | Windows, macOS, Linux |
| Providers | 11 | 14 |
| History | Not its focus | 7, 30, or 90 days by project, session, and model |
| Price | Free, MIT | Free, MIT |
If you are on a Mac anyway
OpenUsage is a fine meter. Add UsageAtlas when you want history, per-window alerts, or the same tracker on a Windows or Linux machine. Download it here.
Questions, answered
Does OpenUsage work on Windows?
No. As of October 2026 it needs macOS 15 or later, and the maintainers declined Windows and Linux builds. Community ports such as pane and crossusage exist.
What is a free OpenUsage alternative for Linux?
UsageAtlas ships an AppImage, a .deb, and an .rpm. It is free and MIT licensed.
Does UsageAtlas track GitHub Copilot?
Yes. Connect Copilot and UsageAtlas shows the AI credits and quotas GitHub reports.