Open Source Windows Disk Space Analyzers

WinDirStat (Windows Directory Statistics) is a disk usage statistics viewer and cleanup tool for Windows. On start up, WinDirStat reads the whole directory tree once and then presents it in three useful views. The official download location and collaboration platform for WinDirStat has moved to GitHub: https://github.com/windirstat/windirstat Downloads and source code provided on SourceForge may not always be up to date. They are primarily used for disaster recovery purposes.

A simple version Disk Space Analyzer, functionality like WinDirStat (Windows Directory Statistics), SpaceSniffer, visualize file size as blocks. This program write with Win32 API, targeting light, fast, simple, include net mapped drive, reading disk usage statistics and show in block viewer.

Little Disk Cleaner is a open source program written in C# that removes any unneeded files to free up extra hard drive space and make windows run faster.

GUI is little broken - the list of duplicates is not relayeble, but this bug not affected main functionality.