CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Autorun Organizer - Free startup manager with delay option.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Startup Delayer - Startup Delayer gives you the power to optimize your Startup Process by delaying applications from starting up as soon as you log into your computer. By delaying the applications during start up, your computer becomes usable a lot faster.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
Autoruns - See what programs are configured to startup automatically when your system boots and you login.