Vim is an open source text editor mainly used by Unix based operating systems, however Vim is cross-platform, meaning it can be used on Unix, Linux, Mac OS X, Windows, iOS, Android. Vim was design to be used on command line interface and as a standalone application in a graphical user interface. Vim can be very annoying at the beginning because of its commands and configuration, but once you learn how powerful this text editor is, you will definitely see how fast your production can be.