Ideally, simple UI behaviour would handle many usage styles: small or maximized Explorer windows, single or multiple monitors, etc.

Our crowd-sourced lists contains more than 10 apps. The popups auto-size and position, but it's tricky. The best Folder Size Explorer alternatives are WinDirStat, TreeSize and Baobab Disk Usage Analyzer.

Popup windows frequently cover up Explorer's Close button.

Background scanning is not optimized: Windows Vista/7/8 support I/O priorities, which should be used to keep scanning fast while keeping the system responsive.

Microsofts Windows Explorer does not calculate folder sizes automatically. This would work better with multiple accounts in Windows XP too. Folder Size Explorer is a free Windows Explorer extension that will calculate folder sizes. The service already does this internally. The system-permissions service should really be abandoned in favour of user-level caches.

The background service is difficult to manage with Windows's UAC model.

I've started this, but it's not working yet. This has the effect of making the Windows directory appear larger than it really is! I think the best solution is to split Size into two concepts: Logical Size and Physical size. Sizes are difficult to interpret correctly! Since Windows Vista, the system makes use of hard links, where the same physical file can appear in multiple directory entries.

Folder size explorer windows 10