What is Mecum?
Latest launch Apache-2.0
Summary
Free Apache-2.0 macOS app that lets agents use desktop software on a virtual display while you keep the cursor.
- Category
- Desktop agents
- Open source
- Yes
- License
- Apache-2.0
- MCP
- Yes
- Pricing
- The app is free under Apache-2.0. Model access is a subscription, an API key, or a model server.
- Links
- Website
Mecum is the desktop-agent filing for October 6, 2026. The app, engine, and background driver are Apache-2.0. Perception runs on the Mac and turns the current window into text, with accessibility data when the app exposes it.
The full note is Mecum for Mac apps. Stopping a worker does not undo actions that already happened. That limitation is in the launch post and is worth reading before you point it at a mail client.
Mecum alternatives
| Tool | License | Pricing note |
|---|---|---|
MecumThis pageFree Apache-2.0 macOS app that lets agents use desktop software on a virtual display while you keep the cursor. | Apache-2.0 | The app is free under Apache-2.0. Model access is a subscription, an API key, or a model server. |
WebcmdApache-2.0 browser infrastructure that learns a website once and turns that knowledge into commands for later runs. | Apache-2.0 | Core package is Apache-2.0. Webcmd Cloud is described as not yet stable, with no price quoted here. |
OpenCodeOpen-source coding agent from the anomalyco/opencode repository, MIT-licensed, with a terminal client and a site at opencode.ai. | MIT | The client is MIT-licensed. Model access is separate; this page does not quote a hosted plan. |
Launches and updates
Mecum for Mac apps
MecumMecum is a free, Apache-2.0 macOS app that lets agents work in desktop software while you keep using the Mac.
Category: Desktop agents
Pricing: Free app
Questions
What is Mecum?
Mecum is a free, open-source macOS app announced on October 6, 2026. It lets an agent work in desktop apps while you keep using the Mac, by moving the agent's windows to a virtual display.
What are Mecum alternatives?
Webcmd is browser infrastructure, not a Mac desktop driver. OpenCode is a coding agent in the terminal. Neither one replaces Mecum's virtual-display driver.
Does Mecum include a model?
No. The launch post says model access may be a subscription, an API key, or a model server. Claude Code and Codex can connect through the local MCP bridge.