PC Services Optimizer (formerly Vista Services Optimizer) is an open source Windows optimization solution that enables you to tweak your Windows services in an easy, automatic and safe way based on the way you use your computer.
MCS System Optimizer 2008 is a tool to optimize memory and processor. Works correctly in Windows 98/Me/2000/XP/Vista system family. Application effectively clears computer memory, wasted by wrong closed applications, games in system and errors...
Smashing Memory Optimizer is a free Windows memory optimization and process management tool! Optimize Memory to Speed Up Your PC with Smashing Memory Optimizer.
Windows 7 Optimizer can quickly make your Windows 7 operating system (both 32 bit and 64 bit) faster, easier to use, and more secure. And all operations performed on the operating system are completely safe.