Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
Apple - Available on iOS
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
iPad 9.7" - The new $329 entry-level iPad for students
XYplorer - File Manager for Windows
Microsoft Surface - Life is a passion project.