EF Commander Free is a file viewr/manager for Windows OS. If you've ever used and liked Norton Commander, you'll like this dual-windowed program. EF Commander is a complex and multi-featured file manager that a wide range of users, from beginners to professionals, will find easy to use. It is the result of many requests received by the author. The first version was written in 1994, under the OS/2 operating system using Presentation Manager, as a personal replacement for the old DOS program Norton Commander. In 1996 it was ported to the 32-bit Microsoft Windows operating system.