The Windows service pack 1 is developed for windows 7, in windows 7 the apps which we are using are added at the corner or edge of the screen, if we drag to the corner we can add recommended apps. Windows 7 product key So, there is no sidebar provided in windows 7. With these features, windows became the most used operating system globally. The Windows service pack 1 is developed for windows 7, in windows 7 the apps which we are using are added at the corner or edge of the screen, if we drag to the corner we can add recommended apps. So, there is no sidebar provided in windows 7. With these features, windows became the most used operating system globally.