Ashampoo WinOptimizer consists of a collection of tools that aim to maintain your system and increase its performance.
The user interface is quite friendly. In the Overview section, you can take a look at details of the system, maintenance (auto-start entries, services, unnecessary objects – fixing them is done is a single click), hibernation files, old update backups, but you can also use tuning assistant (it searches for optimization options for your system, based on your preferences) and activate Live-Tuner (so you can monitor CPU and RAM usage).
The modules found in Ashampoo WinOptimizer include system maintenance (one-click optimizer, drive cleaner, registry optimizer, Internet cleaner, defragmenting tool), performance improver (service manager, startup and Internet tuner, process and uninstall manager), Windows customizer (tweaking, antispy, file associations, context menu manager, icon saver), system analyzer (system information, DiskSpace Explorer, system benckmark, Disk Doctor), file tools (file wiper, encrypter, decrypter, splitter, joiner, undeleter), backup manager, and task planner.
As you can see, there are plenty of options to explore. You can create a favorites list, in order to simplify your searches. When an application comes equipped with so many features, it is very difficult for all of them to run perfectly, especially when Ashampoo WinOptimizer seems to use a small amount of system memory.
For instance, the defragmenting tool runs at its full capabilities only if there is enough disk space available. Plus, if you tell the tuning assistant that you don't use Windows' hibernation status, it will still display Hibernation as an optimizing solution. We have also encountered random errors (e.g. "Abstract Error") when moving back and forth in the program.
The bottom line is that Ashampoo WinOptimizer is definitely worth to be taken seriously as a system maintenance tool, but it could use some work.