CCleaner – Cleans up and makes run faster your internet browser, Recycle Bin, Recent Documents, Temporary files and Log files

Windows Defender – Protects your computer against pop-ups, slow performance, and security threats caused by spyware in real-time

Registry Booster 2 – Clean, Repair, and Optimize your system by safely and effectively cleaning up your registry.

Auslogics Disk Defrag – Make your system run faster by running the Best and fastest disk Defrag available.

AVG Anti-Virus – Free protection against PC viruses

PC Productivity:
Firefox – Browse safe, effective, and fast

Paint.NET – The best and simplest way to edit photos and create digital projects.

Foxit Reader – Best alternative to Adobe PDF; it’s smaller in size, and you can print-to-pdf

Extract Now – Forget Winzip. Extract Now supports ZIP, RAR, ACE, IMG, IMA, IMZ, ISO, and BIN, and archives.

MP3Rocket – Download anything, free, fast

PC Customization:
RocketDock – Taskbar/Start Menu/Desktop Icons Alternative

UXTheme Multi-Patcher – Change the way XP looks with this utility, simple and quick. Then download Visual Styles to your liking.