I am looking for a graphical file explorer/manager that can display the file count for each subfolder, just like [Explorer++](https://explorerplusplus.com/) (and [other CLI solutions](https://softwarerecs.stackexchange.com/q/7069/903)) can display the folder size for each subfolder:

![enter image description here][1]

Free if possible. I'm looking for solutions for Windows 7, Linux and Mac OS X (it's OK if a program only works on one OS).


  [1]: https://i.sstatic.net/5MWj6.png