Startup Manager and Service on Windows 7 that Can be stopped

Just clearing my windows 7 desktop and find 2 useful software+link to speed up the performance of the windows 7 desktop system.

Windows Service That can be stopped: http://i.i.com.com/cnwk.1d/i/tr/downloads/home/windows_xp_services_that_can_be_disabled.pdf

Startup Manager: http://codestuff.tripod.com/products_starter.html

Defragment: http://download.cnet.com/Auslogics-Disk-Defrag/3000-2094_4-10567503.html