New: Draw.io (Jun 2, 2022), Platform 22.0b1 (Jun 10, 2022)
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this is fully open source software that allows you to see where all your space is gone to.
It is always a good idea to search first. Many times you will find what you are after in the beta testing sub-forum.
In the case of WinDirStat, it is already an official app.
I don't know how I missed it. If I had known what it did when I looked over it the first time I would have been using it a while now, I bet. Sorry.
Because, One Truth Prevails! (as does One Love). Pronounced X-T-O. Not an ex-uncle.