Download Overtab

Install the latest native version of Overtab for macOS.

Version: v0.1.1•Size: 6.3 MB•Requires: macOS 13.0+

1. Gatekeeper Bypass

Because Overtab is ad-hoc signed (and not registered under a paid Apple Developer subscription), macOS Gatekeeper will block it by default. Follow one of the quick methods below to run it safely.

Method A

Right-Click Open (Easiest)

Double-click the downloaded Overtab.dmg.zip to expand it.
Open the Overtab.dmg volume and drag Overtab.app into your /Applications folder.
Open the /Applications directory in Finder.
Right-click Overtab.app and click Open.
Click Open in the warning dialogue box. You only need to do this once.

Method B

Terminal Command

If macOS refuses to open the app or shows a corruption warning, open Terminal and run the command below to strip the quarantine attribute:

xattr -cr /Applications/Overtab.app

Open Terminal on your Mac.
Paste the command above and press Enter.
Double-click Overtab in Applications to launch immediately.

2. Required System Permissions

To interact with external applications and display window grid previews, Overtab requires two macOS system-level permissions.

System Switcher

Accessibility

Why: Allows Overtab to raise, focus, and close windows when selected from the Activities grid or Tab Switcher, and captures the global Option key shortcut.

System Settings > Privacy & Security > Accessibility

Enable the checkbox/toggle next to Overtab to grant control.

Visual Previews

Screen Recording

Why: Allows Overtab to capture real-time window screenshots to show inside the Activities grid. Overtab runs 100% locally and never saves or sends these images anywhere.

System Settings > Privacy & Security > Screen Recording

Note: If disabled, Overtab will fall back gracefully, showing application icons and document names instead of live card previews.