QuickTime Lite is a trimmed-down version of QuickTime that contains only the essential components needed for playing QuickTime content that is embedded in webpages.
Advantages of QuickTime Lite are:
• Quick and easy install
• Ability to make an unattended installation
• No background processes
• No unwanted stuff and other nonsense
• Smaller size than Apple QuickTime
It comes bundled with Media Player Classic - a freeware media player that supports both QuickTime Lite and Real Alternative.