GNOME Tweak Tool!

CleanMyMac scans every inch of your system and safely removes gigabytes of junk in just two clicks. Free up storage on your Mac and boost its performance — CleanMyMac finds 74 GB of junk on an average computer.

System Mechanic automatically repairs errors and fragmentation, cleans out clutter, and tunes up your PC -- so that it runs smoothly, reliably, and up to 300% faster! Don't waste money on expensive "experts" to fix your PC when System Mechanic will repair, tune, and maintain it for you!

Unity Tweak Tool is a settings manager for the http://alternativeto.net/software/unity-1/ desktop. It provides users with a fast, simple and easy-to-use interface with which to access many useful and little known features and settings of the desktop environment that one may want to configure.

Remember the time when your computer was new. Everything was so quick. What do you think happened now? Well you guessed it right, it is upset with you because you are not taking good care of it.

TweakNow PowerPack is a fully-integrated suite of utilities that let you fine-tune every aspect of your computers operating system and Web browser. The Registry Cleaner module provides you with a safe and simple way to clean Windows Registry. To keep your computer always at top performance, we recommend to clean your registry at least once a month. For Windows tweaking lovers, the suite provides more than 100 hidden Windows settings in the Windows Secret section. Using modules included in this section, you can easily customize your Windows like geeks do. The Virtual Desktop module lets you run as many as four custom-designed desktop configurations simultaneously, allowing you to tailor your computer screen to your mood and your work requirements. Last but not least, the suite also gives you a complete picture of all aspects of your computers hardware, including detailed information about your motherboard, processor, video card, memory, hard disk and network. »

Windows Tweaking utility that can improve your Windows performance and security with a simple mouse click by tweaking Windows services in an automatic and very safe way.

GIGATweaker is a powerfull and compact application that allows you to optimize and tweak your OS. One of the best and fastest programs that combine the highest comfort, compactness and power.

Norton Utilities improves your PC's performance and startup time by repairing common PC issues, freeing up disk space, and providing registry repair.

Tweak-7 is everything you need to customize and tweak Windows 7 to fit your needs. From start menu, to desktop tweaks, from taskbar customization to system tweaks.3D system performance analyzation combined with heaps of system related tweaks to optimize your Windows 7 in speed and reliability. System restrictions: you allow what is allowed on your system and what is not: protected folders, protected applications

MacBooster helps you clean, speed up and secure your Mac OS X from Mac malware. Easily free up Mac hard drive and make OS X run faster.

WinBubbles is an easy-to-use FREE tweaking and customization utility that focuses on enhancing your Windows 7 and Vista Experience. Even If your not a dedicated or just starting to learn to customize your computer, WinBubble will make every tweaking much easier.The lightweight version WinbubblesLite is a portable app and can be downloaded from http://www.drwindows.de/windows-7-toolbox/15249-winbubbles-lite-windows-7-customization-tool.html .WinBubbles is available only in English.

Ailurus is an application which makes Linux easier to use. Currently supports Fedora, Ubuntu and Mint.

Tweakers is a handy, easy to use tool specially designed to provide several tweaks specially developed to help you optimize your computer.

A clean registry is essential for a trouble free PC and ensures that your high performance standards are maintained. The registry holds key information about your PC and as you install and remove programs, it collects redundant and unwanted debris that degrades performance and leaves it vulnerable to malware designed to infiltrate a computer.Unlike conventional registry cleaners, that can cause system instability by taking an overaggressive approach, PerfectSpeed’s SafeClean technology takes the safe and tactical approach. Finally, you can confidently clean and repair your registry with one of the best advanced disk cleaner utility and registry cleaner solutions available. PerfectSpeed allows you to clean and repair your registry with confidence. »