From Totalidea Software:
Tweak-8 features to customize, optimize and tweak Windows 8. No need to dig into the system registry: activate hundreds of tweaks by a mouse click only . Make Windows 8 work and look the way you want it to - Tweak-8 includes everything you need. Performance tweaks and optimizations included. Speed up your CPU, your internet connection and more.
Comparing Tweak-8 with other optimization and tweak tools is simply impossible since no competitive product covers such a huge functionality: from simple system tweaking to complex and fast registry cleaning and registry defragmentation and comprehensive system cleanup.