XTree was a file manager software originally designed for use under DOS. It was published by Executive Systems and first released on 1 April 1985, and became highly popular. The program used a character mode interface which had many elements typically associated with a graphical user interface.

The program filled a required niche in the market, as DOS shipped with only a command-line file manager, until the generally unsuccessful DOS shell that was provided with MS-DOS 4.0. Even at this point, the speed and features of XTreeGold were superior (specifically support for the ZIP compression format and ability to undelete files). The program also had the benefit of requiring very little memory, essential at a time when less than 640 kB of memory was available for programs to run.

Read more about XTree:  History, Clones