williamcpierce/Overview: A free and open source window preview and task switcher tool for macOS

Create live window previews for any application, and activate them efficiently with built-in task-switching

Note: Overview is beta software. It may contain bugs or unexpected behavior. Use at your own risk.

For development updates, please join our Discord:

Live Window Previews: Real-time window previews with configurable frame rates and automatic hiding

Quick Application Switching: Switch applications through preview clicks or keyboard shortcuts

Preview Customization: Customize preview window appearance, visibility, and saving/restoration options

Glanceable Info Overlays: Display source app names, window titles, and focus status at a glance

Saved Preview Layouts: Save and restore collections of preconfigured preview windows

Download the latest version from the Overview website williampierce.io/overview/.
Mount the disk image and drag Overview into your Applications folder.

Left-click preview: Switch to source application
Right-click preview: Access context menu
- Toggle Edit Mode for repositioning/resizing
- Stop capture
- Close preview window
⌘N Create new preview window
⌘E Toggle edit mode
⌘, Open settings

See setting menu info panels for full details

Previews
- Frame Rate
- Automatic Hiding
  - Hide previews for inactive source applications
  - Hide preview for focused source window
Windows
- Appearance
  - Opacity
  - Default dimensions
  - Shadows
  - Synchronize aspect ratio
- System Visibility
  - Show windows in Mission Control
  - Show windows on all desktops (including fullscreen)
- Management
  - Always create window on launch
  - Close window with preview source
  - Save window positions on quit
  - Restore window positions on launch
Overlays
- Source Focus
  - Border width
  - Border color
- Source Title
  - Font size
  - Background opacity
  - Location
  - Type (window, application, or both)
Layouts
- Window Layouts
  - Create layouts to save window arrangements
  - Apply layouts to restore window configurations
  - Update existing layouts
- Apply layout on launch
- Close all windows when applying layouts
Shortcuts
- Source Activation
  - Keyboard shortcuts for focusing source windows
  - Multiple source window titles per shortcut for cycling
  - Enable or disable individual shortcuts
Sources
- Source Application Filter
- Filter mode (blocklist/allowlist)
Updates
- Automatically check for updates
- Automatically download updates
- Enable beta updates

Overview requires Screen Recording permission to function, but:

For the complete list of known issues, see github.com/williamcpierce/Overview/issues

Support Overview’s development:

100% of donations will be used for project expenses or reinvested in development – no profits will be distributed to any individuals.

See FUNDING.md for full details.

The project adheres to a style guide (see STYLE.md) that emphasizes:

This project is MIT licensed (see LICENSE.md)

The design, features, and general purpose of Overview are heavily inspired by Eve-O Preview.

Eve-O Preview was originally developed by StinkRay, and is currently maintained by Dal Shooth and Devilen.

Parts of this application include code derived from Apple Inc.’s ScreenRecorder sample code, used under the MIT License.

関連記事