ShowSize is no longer available but you can get the "File Tree" App from Microsoft Store.

File Tree has some light disk space related features of ShowSize but its main purpose is to let the users view and print folder trees.

Did you buy ShowSize within the last 3 years? If yes, you can re-download the ShowSize Paid Edition as described below.

Please find the Order Email from FastSpring that you got after your original purchase. Click on the download link to download the installer. Please make sure that you preserve this installer in your own computer as the download feature may go away. The installer does not need Internet to activate ShowSize.