fman is described as 'The most modern dual-pane file manager. For Windows, Mac and Linux' and is a well-known app in the File Management category. There are more than 50 alternatives to fman for a variety of platforms, including Windows, Mac, Linux, BSD and PortableApps.com. The best alternative is Double Commander, which is both free and Open Source. Other great apps like fman are Total Commander (Freemium), Midnight Commander (Free, Open Source), FreeCommander (Freemium) and XYplorer (Paid).