Git Gutter

Vim Git Gutter (GitHub: airblade / vim-gitgutter, License: MIT) by Andrew Stewart shows a symbol in the sign column to indicate where lines have been added, modified, or deleted. This is based on Git Gutter for Sublime Text 2.

Vim's documentation in :help sign-intro explains what the sign column is for if you're not familiar with it.

vim-nodejs-complete

vim-nodejs-complete (GitHub: myhere / vim-nodejs-complete) by Lin Zhang adds 'omnifunc' support for Node developers. For example, typing:

var fs = req

And then pressing CTRL-X_CTRL-O will complete require:

var fs = require(

Pressing CTRL-X_CTRL-O again will display module name completion.