It may happen at times that you may want to know where all your disk space has gone or maybe which files or folders are eating up how much space!

Disk Space Fan is a freeware disk space analysis tool with nice eye-candy and graphics, for Windows 7 & Vista, which can help you.

This tool will help you identify where your disk space has gone and possibly help you to free up disk space by quickly finding and deleting useless files.

It displays disk space usage with a nice chart. You can navigate the folders easily with the chart. It is also integrated with Windows Explorer to open, delete and browse files or folders.

The tool has fantastic Disk visualization & animation. The folders and files are sorted by their size to easy identification. Whats more, it also integrates itself with Windows Explorer. This helps you to browse, open, and delete easily.

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SpaceSniffer is a similar freeware disk space analysis tools which may interest you. Its animation is a treat to watch! You can also check out Saleen File Pro, Disk Savvy and Better Directory Analyzer.