Snow Leopard versus Windows 7

Ridicuously Big Icons

Both Snow Leopard and Windows 7 permit a large icon view. Windows 7 supports icons in sizes up to 256 by 256 pixels. Snow Leopard one-ups Windows 7, though: The Finder can display icons in sizes up to a seemingly absurd 512 by 512 pixels (512-pixel icons were around in 10.5, but the Finder couldn't take advantage of them outside the Quick Look and Cover Flow views).
Compared: Mac OS X Snow Leopard and Windows 7

This is shaping up to be the autumn of new operating systems. The latest version of Mac OS X, Snow Leopard, ships to customers this Friday. Windows 7, the follow-up to the much-maligned Windows Vista, hits store shelves in late October. Neither operating system will drastically change the way you work.

Windows 7 builds on Windows Vista, smoothing out Vista’s rough spots and bringing a number of new end-user features (such as the reworked taskbar) to the table. Meanwhile, with Snow Leopard, Apple focuses on new under-the-hood technologies that offer subtle refinements and fixes. Still, there is plenty to say about how Apple’s next big cat and Microsoft’s lucky number stack up against each other.
Aero Peek

Windows 7 brings a new window management tool to the table, too. Called Aero Peek, this feature helps you see the window you want to jump to next. To use Aero Peek, click the taskbar icon for the app associated with the window you’re looking for, and then mouse over the thumbnails. All other windows will go transparent, leaving only the window you mouse over visible.
Libraries

Windows 7 introduces a new feature to the mix: Libraries. Essentially, a library is a way to view the contents of several folders in one place. For example, the Pictures library pulls together the contents of the My Pictures and the Public Pictures folders by default. You can add or change the folders tied to any particular library, of course.
Managing Your Files

Snow Leopard’s Finder and Windows 7’s Explorer have strikingly similar interfaces, with quick-search fields in the upper-right corner, path bars (OS X’s is optional and can be switched on in the View menu), and sidebars that provide easy access to various common locations on your computer.
Smart Folders

Nothing in Snow Leopard directly compares with Windows' libraries. The closest OS X feature is saved searches (known as Smart Folders), but a saved search pulls together files based on search criteria, not location. You can’t, for example, create a smart folder that contains all of the photos from two particular folders. On the other hand, you can't combine Windows 7 libraries with saved search results.

Windows 7, of course, has a smart folder feature as well.
The Dock and Stacks: A Rough Equivalent to Pinning

Snow Leopard has no features directly comparable to the jump list's pinning feature. Instead, Mac users can use stacks in the Dock to provide quick access to folders and files (drag any folder to the Dock to create a stack). In Snow Leopard, Apple refreshes stacks: You can view unlimited items in a stack by using Grid view (thanks to the addition of scrollbars), and you can drill down into folders without having to open any Finder windows. In addition, you can drag and drop any file into the Dock for quick access.
Windows 7's Preview Pane

Windows 7 has an optional preview pane for use in any Explorer window. Select a file, and the preview will appear in the preview pane. Compared to Snow Leopard’s preview feature, Windows 7’s seems pretty basic (text loses all formatting, for example), but it’s better than nothing. Also, as was the case with Vista, folder icons in Windows 7 give you a peek at the folder's contents.
Improved Window Management

Exposé, a part of Mac OS X since 2003, learns some new tricks in Snow Leopard. Most notably, you can now click and hold the Dock icon for any open app in order to view all open windows for that app. This feature now extends to minimized windows--whereas in previous versions of OS X, Exposé ignored any windows that you sent to the Dock. In Snow Leopard, a thumbnail in Exposé represents each of these windows.

Also, Snow Leopard now arranges windows in a grid when you view them in Exposé. Previously, windows seemed to scale down in a haphazard fashion. I actually prefer the old method of handling Exposé: With the new Exposé arrangement, I find that all of the windows end up about the same size, which makes finding what I’m looking for more difficult, but this issue is very much a matter of personal preference.
Quick Access via the Dock or Taskbar

Some OS X apps can use the Dock’s pop-up menus to display application-specific information and to provide easy access to frequently used commands. For example, if you right-click iTunes’ Dock icon in Snow Leopard, you’ll get a menu that you can use to see what’s playing, to play or pause your music, to assign a rating to the current song, and to control other simple iTunes commands.

With Windows 7’s retooled taskbar, Microsoft introduces a similar feature called jump lists. Jump lists not only provide access to common commands (Windows Media Player‘s jump list has a Play command, for example), they also let you “pin” items to a specific list. For example, you can pin commonly used folders to the Windows Explorer jump list and important documents to the WordPad jump list.
Clearing the Desktop

The most useful aspect of Aero Peek is its desktop peek feature. If you want to take a quick look at the desktop without hiding all of your windows, simply move your mouse pointer to the lower-right corner of the taskbar; at once, all windows will turn transparent. Click the lower-right corner of the taskbar to hide all open windows and see the desktop; click again to get back to work. This option is roughly equivalent to the Show Desktop feature in OS X's Exposé, which moves all windows off your screen with a keystroke (or with a flick of the mouse, if you have set a hot-corner for Exposé).

Both Windows 7 and Snow Leopard are solid updates to their respective operating systems, but I can't say that either one will persuade many users of the competing OS to cross to the other side. If you're perfectly happy with Windows, Snow Leopard probably won't make you lust for a Mac. Likewise, if you're a Mac user and weren't considering switching to Windows before, Windows 7 is unlikely to change your mind.
Bolstered OS X Inline Previews

To augment the preview features (Quick Look, Cover Flow, basic icon previews) present in Leopard, Apple adds an enhanced inline preview to the Finder’s icon view in Snow Leopard. When you view a folder that uses icons of 64 by 64 pixels or larger, mousing over your files will display preview/playback controls. If you mouse over an audio or video file, you’ll have access to a play button. If you mouse over a Word doc, a PowerPoint presentation, or a PDF (among other common file formats), you’ll get forward and back arrows for paging through a document.