Cleaner Modules (Ashampoo WinOptimizer Platinum Suite):
Because of the way Windows® is designed more and more redundant files, registry entries and other useless items generally collect on your system in the course of time. This applies in particular if you frequently try out and uninstall new shareware programs and other applications. The Cleaner modules give you a suite of tools with which you can seek out and eliminate all this garbage to free up valuable space and keep Windows® running smoothly.

Tuner Modules (Ashampoo WinOptimizer Platinum Suite):
Windows® comes with standard settings for almost everything it does. These settings are often less than ideal, and sometimes they are downright counterproductive. The Tuner modules enable you to improve performance by "tweaking" the standard Windows® settings for a number of different tasks. All Tuner modules include backup facilities that enable you to experiment with different settings safely. The new StartUp Tuner module displays programs that are started automatically with Windows® and allows you to edit the entries that launch them.

Why do you need an uninstaller at all? (Ashampoo UnInstaller Platinum Suite)
The full answer to this question could fill a book. In a nutshell, however, modern Windows® applications are very complicated beasts. They include large numbers of files that are often saved in many different places, not just in the application's own program directory. In addition to this they also have even larger numbers of settings, sometimes hundreds, which they record in Windows' central database, which is known as the Windows® Registry.

How Ashampoo UnInstaller Platinum Suite does the job?
Ashampoo UnInstaller Platinum Suite works by creating two "snapshots" of your system, one before you install an application and another one directly afterwards. These snapshots record the entire status of your computer system, including all registry entries, the locations, dates, sizes and versions of all files and the contents of all configuration files. Getting this right is extremely complicated, and Ashampoo UnInstaller Platinum Suite does this difficult job very, very well.