Vim is a development tool that functions as a highly-configurable text editor program. Called a "programmer's editor," Vim is a clone of Bill Joy's vi text editor program for Unix—its very own name the contraction of “Vi IMproved.” This program can efficiently create and change any kind of text, whether it’s for editing emails or fiddling with configuration files, so it’s not just for programmers. However, there is no doubt that Vim is a favorite among programmers themselves, as the tool is greatly versatile—and while it has a steep learning curve, its features are nevertheless of high functionality.