AltTab
See every open window at a glance and switch between them instantly on Mac.
Best for
Mac users who want a Windows-style, thumbnail-based window switcher
Skip if
You only need basic switching and don't want another background app
What is AltTab?
AltTab is a free and open source window switcher for macOS that replaces the operating system's default Command-Tab behavior with a full window-by-window view, showing high-quality thumbnail previews of every open window, including hidden and minimized ones, across spaces. The free version includes dark mode, live thumbnail previews, and trackpad gesture support, while AltTab Pro adds window search by title or app name, up to nine independently configurable keyboard shortcuts, automatic thumbnail sizing, and alternate display styles like a dock-style icon view or text-only list. The project reports over 8.5 million downloads and 16,000 GitHub stars, and Pro includes a 14-day free trial.
SpecificationsAI-estimated
Key Features of AltTab
Use Cases for AltTab
Find a specific window fast
Use Pro's search feature to filter open windows by typing the app or window title instead of scanning through thumbnails.
Switch windows the Windows way
AltTab gives Mac users a window-by-window switcher similar to Alt-Tab on Windows, a common reason people switching platforms install it.
Set up multiple custom switchers
Pro users can configure up to 9 independent keyboard shortcuts, each with its own filters, for different switching behaviors.
See every window across all spaces
AltTab shows high-quality thumbnail previews of every open window, including minimized ones, before you switch to it.
Pros & Cons of AltTab
Pros
- Free and open source with a large download base
- More capable than macOS's built-in Command-Tab switcher
- Highly configurable with the Pro tier
- Actively maintained, described as 8 years of refinement
Cons
- macOS only
- Search and multiple custom shortcuts require the paid Pro upgrade
- Adds another background utility to manage
Frequently Asked Questions
Is AltTab free?
The base version of AltTab is free and open source, available on GitHub. AltTab Pro is a paid upgrade with a 14-day trial.
How popular is AltTab?
The site states the open source version has been downloaded over 8.5 million times and the project has 16,000 GitHub stars.
What does AltTab Pro add?
Pro adds app icon and window title display styles, search by title or app name, automatic thumbnail sizing, and up to 9 custom keyboard shortcuts.
What platforms does AltTab support?
AltTab is a macOS-only application.
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