In general that means you are free to do whatever you like with the binary form (mirror it, put it on media accompanying printed magazines and also use it inside your company) free of charge. WinDirStat is free software published under the GNU General Public License, version 2. The installer/setup itself has the SHA1 hash 6fa92dd2ca691c11dfbfc0a239e34369897a7fab. exe files contained in the installer have the following SHA1 hashes (Unicode and ANSI version respectively): You can use File Checksum Integrity Verifier from Microsoft to verify the file hashes (the link describes how to use it to check file hashes). Source code repositories: SourceForge (primary).Alternative download locations can be found below.Download WinDirStat 1.1.2 from SourceForge.Latest version: 1.1.2 s to downloads and other content WinDirStat - s to downloads and other content