If you like WinDirStat, try WizTree sometime. Not open source but free from antibody-software. Many times faster in operation that WinDirStat.
For file renaming lately ReNamer Lite by den4b has been great. It seems to have all the power of other rename tools with a GUI that makes it very easy to accomplish what you are trying to do.
For file renaming lately ReNamer Lite by den4b has been great. It seems to have all the power of other rename tools with a GUI that makes it very easy to accomplish what you are trying to do.