Ranked in these QuestionsQuestion Ranking
Pro Free / Open Source
GNU Public License (GPLv2).
Pro Color codes by file type
You can sort the list in the extension column (file type) globally or from parent folder selected. This is very helpful in case there are files of a specific type that you may not be aware of that's taking up too much space. Also, the colors correspond to the visual section.
Pro PacMan Progress Bars
There are faster programs.
Con Classic UI
interface are old and cluttered