I mean, it does work pretty similar to the windows task bar? If an application is open, it is listed there in the dock with a mark under it. You can pin applications to the dock or remove them via right clicking it. Right clicking on one will provide a list the windows which are open to which you can select from, as well as a "show all windows" option which will hide everything else, and visually show just the windows for that application (you can also just force-click on the app icon to do this).

The only difference I see is that the windows taskbar provides a preview thumbnail when hovering over the icons. In which case, there's apps you can get for that.