Vim is a highly configurable text editor built to make creating and changing any type of text very efficient. It is included as "vi" on most UNIX systems and Apple OS X.

Among its features are:

• Persistent, multilevel undo tree;
• Extensive plugin system;
• Support for hundreds of programming languages ​​and file formats;
• Powerful search and replace;
• Integrates with many tools.

Official Vim Page