Boost your system's performance using TuneUp Utilities

                            Using this makes your task of maintaining system easier. You don't have to separately download different software for Optimization. TuneUp Utilities performs complete optimization of your system and keeps it clean, fast and up to date. It fixes problems, maintains system, increases performance and also customizes your PC.
It optimizes system startup and shutdown, defragments hard disks, cleans registry and does many more. Here's the download link for the latest version. TuneUp Utilities 2011 also includes new features that make the program even more useful. 

(Source: Google Images)

                           Some of these innovations include the TuneUp Program Deactivator, which lets you turn off unwanted programs and this reduce load on your processor; the Tuning status tool, thanks to which you can keep track of all the optimizations performed with TuneUp Utilities; and the Rating function for programs, which helps you decide the programs, processes and services that should be disabled based on feedback from TuneUp users all over the world. Plus, the TuneUp Turbo Mode has been enhanced and can now shut down over 70 background services to ensure individual programs run smoothly.

                             A major feature that makes this program a highlight is the 1-click maintenance. It works like magic! 

(Source: Google Images)

 The disadvantage till date is that it doesn't use all windows 7 features.