SpaceMonger

SpaceMonger is a free and open source program that displays the size of directories and files in a graphical format. It's a great way to visually check how your storage is being used and identify large files or directories that you can delete or move to gain more space.

SpaceMonger is very easy to use. Just launch it and select the folder you want to view. The program will list the files and directories in the folder, along with their size. The file size is displayed in various units, including bytes, kilobytes, megabytes, gigabytes and terabytes.

SpaceMonger also allows you to filter the results by file type or size. For example, you can filter results to include only files larger than 100 megabytes. This helps you quickly identify large files that you can delete or move.