Of all the smart phones that offer downloadable applications, devices baked with Windows Mobile have the widest variety of shopping venues. (Check out sites like Handango.com orPocketGear.com for our favorite go-to WinMo online stores.)

There is one downside to visiting these shopping hubs however: you might have to drop a bit of coin to get the app with the functionality you need. That's because Windows Mobile applications are often more pricey than BlackBerry, Android, or iPhone apps.

But, fret not, none of that matters with these ten quintessential applications for your Windows Mobile device. They're all on the house!

Interested in more apps for more mobile operating systems? Check out The Best Free Smart Phone Apps (And A Few Worth Paying For), our list of free and paid applications for Windows Mobile, BlackBerry, Apple, and Android devices.