<!--
{
  "availability" : [
    "macOS: 10.13.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AppKit",
  "identifier" : "/documentation/AppKit/NSWindowTabGroup",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "AppKit"
    ],
    "preciseIdentifier" : "c:objc(cs)NSWindowTabGroup"
  },
  "title" : "NSWindowTabGroup"
}
-->

# NSWindowTabGroup

A group of windows that display together as a single tabbed window.

```
class NSWindowTabGroup
```

## Overview

AppKit automatically creates instances of [`NSWindowTabGroup`](/documentation/AppKit/NSWindowTabGroup) to reflect the tabbing state of your windows. You can access a window’s current tab group using the [`tabGroup`](/documentation/AppKit/NSWindow/tabGroup) property.

## Topics

### Checking the Group Identifier

[`identifier`](/documentation/AppKit/NSWindowTabGroup/identifier)

The unique identifier for a tabbed window group.

### Configuring the Tab User Interface

[`isOverviewVisible`](/documentation/AppKit/NSWindowTabGroup/isOverviewVisible)

A Boolean value indicating if the tab overview is currently displayed.

[`isTabBarVisible`](/documentation/AppKit/NSWindowTabGroup/isTabBarVisible)

A Boolean value indicating whether the tabbed window group currently displays a tab bar.

### Managing Tabbed Windows

[`windows`](/documentation/AppKit/NSWindowTabGroup/windows)

A collection of the windows that are currently grouped together by this window tab group.

[`selectedWindow`](/documentation/AppKit/NSWindowTabGroup/selectedWindow)

The selected, or frontmost, window in the tab group.

[`addWindow(_:)`](/documentation/AppKit/NSWindowTabGroup/addWindow(_:))

Adds a window to the tab group.

[`insertWindow(_:at:)`](/documentation/AppKit/NSWindowTabGroup/insertWindow(_:at:))

Inserts a window at a specific location within the tab group.

[`removeWindow(_:)`](/documentation/AppKit/NSWindowTabGroup/removeWindow(_:))

Removes a window from the tab group.

## See Also

[`tabGroup`](/documentation/AppKit/NSWindow/tabGroup)

A group of windows that display together as a tab group.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)