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.

WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.

Autoruns - See what programs are configured to startup automatically when your system boots and you login.

TreeSize - TreeSize tells you where precious disk space has gone to.

Quick Startup - Quick Startup is an advanced startup manager to speed up your windows boot and solve the problem of slow PC system startup. It gives startup items information, reference and allows to delay auto-startup items.

SpaceSniffer - SpaceSniffer is a freeWare (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks.