VimEdit

Vim is an extremely powerful and efficient text editor particularly well suited for editing program source code. It’s most distinctive distinguishing feature is that it is a modal editor, unlike almost every other editor in widespread use today.

Official site

• http://www.vim.org/

Other resources

• http://www.viemu.com/a-why-vi-vim.html: "Why, oh WHY, do those #?@! nutheads use vi?"

See also

• MacVim: a Mac OS X-specific GUI version of Vim
• Command-T: a plug-in I wrote for VIM that brings fast file navigation inspired by the "Command-T" feature in TextMate