Daoisoft

• XTweak
  screenshot | size: 8.81 MB | price: $26.95 | date: 6/6/2007
  XTweak is an advanced tweaker and optimizing tool for Windows XP/2003
• HDD Observer
  screenshot | size: 4.76 MB | price: $24.95 | date: 8/13/2007
  Can detect a lot of hard drives troubles and give a solution for them
• DTweak
  screenshot | size: 11.47 MB | price: $29.95 | date: 4/25/2007
  Tweak a Myriad of Windows Vista Features and Enhance its Performance
• 7Tweak
  screenshot | size: 9.13 MB | price: $29.95 | date: 8/5/2009
  System tools suite for Windows 7