php composer: npm like tool

A good introduction to the php composer:

http://www.phpclasses.org/blog/post/221-Speedup-Your-Web-Deployments-Using-Composer-to-Install-PHP-Classes-Packages.html

The site https://packagist.org is where to post package.

It is almost a clone of npm and I like it.

Image: it came from getcomposer site, from http://wizardcat.com/