Product School - The global leader in product management training
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
PM Starter Pack - Practical guide on how to get started in product management
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
Software Product Management Stack - Resources & tools to help you manage your software product
XYplorer - File Manager for Windows