Caja is described as 'fork of Nautilus from GNOME 2 and is native to the MATE Desktop Environment. It is a file manager like the Windows Explorer (not to confuse with Internet Explorer/Microsoft Edge), but for Unix/BSD and Linux' and is a File Manager in the file management category. There are more than 25 alternatives to Caja for a variety of platforms, including Linux, Windows, Mac, BSD and Xfce. The best alternative is Double Commander, which is both free and Open Source. Other great apps like Caja are Dolphin File Manager, Midnight Commander, File Explorer and GNOME Files.
Caja is mainly a File Manager but alternatives to it may also be FTP Clients or File Renamers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Caja.
Dolphin is a file manager for KDE focusing on usability. Has three view modes: Icon, Detail and it used to have Column View like in Finder (it is not available in current version due to problems with maintaibility). Supports FTP, SCP and other protocols. Highly configurable.
File Explorer (Windows 10), previously known as Windows Explorer, is a file manager application that is included with releases of the Microsoft Windows operating system from Windows 95 onwards. It is sometimes referred to as the Windows shell, explorer.
Thunar is a new modern file manager for the Xfce Desktop Environment. Thunar has been designed from the ground up to be fast and easy-to-use. Its user interface is clean and intuitive, and does not include any confusing or useless options.
Far Manager is a program for managing files and archives in Windows operating systems. Far Manager works in text mode and provides a simple and intuitive interface for performing most of the necessary actions: