QuickTime Alternative will allow you to play QuickTime files (.mov, .qt and other extensions) without having to install the official QuickTime Player. It also supports QuickTime content that is embedded in webpages. Features of QuickTime Alternative 1.31:

Media Player Classic [version 6.4.7.5]
QuickTime Codecs [version 6.5.0.48]
QuickTime DirectShow filter
QuickTime Internet Explorer plugin [version 6.5.0.48]
QuickTime Browser plugin [version 6.4.0.29] (for Opera/Mozilla/Netscape)
QuickTime Control Panel
Extra plugins for QuickTime

Changelog 1.30 -> 1.31:

Downgraded browser plugin to fix some problems
Some small improvements

Download: QuickTime alternative 1.31 [ 6.86 MB ]

Download: Real Alternative 1.21 Final [ 4.68 MB ]