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) or Bitbucket (secondary).Alternative download locations can be found below.
Latest version: 1.1.2 s to downloads and other content
WinDirStat - s to downloads and other content