Best Mac Dock Apps & Dock Replacements (2026)

Free and paid Dock tools, compared honestly. Updated August 2026.

macOS gives you one Dock and almost no control over it: it can't preview a window, can't switch between windows (only apps), and can't snap anything. So people reach for a Dock app to fill the gaps. There are good ones in 2026, free and paid, and they split into a few camps. Here's an honest look at each and where it fits. Full disclosure: I make one of them (DockApp), and I'll tell you plainly when a free or single-purpose tool is the better pick.

At a glance

uBar: best for a Windows-style taskbar

uBar (around $30) is the long-running favorite for turning the Dock into a taskbar, with grouped windows, labels, running indicators, and per-app controls. It's actively maintained and well-liked. The catch is that it's a different look and workflow: if you want something that still feels like the Mac Dock, uBar isn't that. But if a taskbar is exactly what you're after, it's the one. See DockApp vs uBar side by side →

ActiveDock: a full, themed Dock replacement

ActiveDock (about $16, one-time) replaces the Dock with its own: window previews, app groups and folders, custom themes and icons, and a launcher. It's capable and actively maintained, with a 2026 release that's fully compatible with macOS 26 Tahoe. If a deeply skinnable, themed Dock is what you're after, it's a solid, inexpensive pick. DockApp's edge over it is the real window switcher and snapping with saved layouts. See DockApp vs ActiveDock side by side →

DockDoor: free window previews + Alt-Tab (genuinely great)

DockDoor is free and open source, and it's excellent. Hover a Dock icon to peek at that app's windows, and Alt-Tab through them with the keyboard, competitive with the paid preview tools. If live previews are all you want, get DockDoor. It leaves the system Dock in place and just adds the peeking and switching on top. DockApp's edge over it is a full Dock replacement — the ⌘Tab switcher, snapping with saved layouts, and widgets built into one app. See DockApp vs DockDoor side by side →

AltTab: free, keyboard-first window switcher

AltTab is a free, open-source window switcher that brings a thumbnail-based Alt-Tab to macOS, showing every window, not just apps. It's the go-to if keyboard switching is the one thing you're missing and you don't need anything else. For every way to switch between windows on a Mac — the free built-in shortcuts included — see the guide to switching between windows on Mac. Coming from Windows and want the whole taskbar workflow, not just Alt-Tab? See a Windows-style dock for Mac.

Rectangle: free window snapping

Rectangle is the free, open-source standard for snapping windows to halves, thirds, and quarters with keyboard shortcuts or by dragging to a screen edge. It does one job well. It doesn't touch the Dock, do previews, or save whole layouts, but for plain snapping it's all many people need. See the full Mac window manager comparison →

DockApp: previews, switcher, snapping, and a reshapeable Dock in one app

This is the one I make, so here's the honest positioning. Each tool above solves one piece. DockApp puts them together: live window previews on hover, a real ⌘Tab switcher that flips through every window (and hands ⌘Tab back to macOS when you quit), and window snapping with a twist the others don't have. You can save a whole arrangement as a layout and drop every open window back into place in one click. On top of that, the Dock itself is reshapeable: transparent, tinted, bordered, custom icons, groups, badges, a shelf, and live widgets.

It's built entirely on public Apple APIs and notarized, with no SIP disabling and no code injection like older Dock hacks needed, and nothing leaves your Mac (no accounts, no tracking). One-time $9.99 (launch price), up to three Macs, 14-day refund, on macOS 26+.

Straight talk: if you only want free hover previews, get DockDoor. If you just want a taskbar, get uBar. DockApp is for the person who wants previews and a real switcher and snapping with saved layouts and a customizable Dock, and would rather have one native app than four that don't know about each other.

Which should you pick?

• Windows-style taskbar → uBar.
• Just free hover previews + Alt-Tab → DockDoor (add AltTab if you want more switching).
• Just window snapping → Rectangle.
• Previews + switcher + snapping + a customizable Dock, one native app → DockApp.