Price: Free

Android, iOS, or Windows 7 Mobile—here's a DIY web service that lets you create apps for all three platforms. An all-purpose wizard is present to help you with the entire building process and the program offers filters to notify users of any additional or missing components necessary before publishing. Choose from several templates that cater to different categories (business, entertainment, etc.) or feel free to build a new theme by accessing the custom feature. Layout options such as photo/video galleries, social media links, events notifier, form builder, and soundboard can be added, too. Not enough? The Appsbar team also takes special feature requests to accommodate mobile UI enhancements. Go nuts.