Depending upon the area you are searching, I would turn to that community. For example, Rails developers might turn to http://rubygems.org/ http://rubygems.org

Depending upon the area you are searching, I would turn to that community. For example, Rails developers might turn to http://rubygems.org/ http://rubygems.org/ for Rails gems. I tried to replicate this for the CakePHP framework by building CakePackages (http://cakepackages.com/ http://cakepackages.com/) . Outside of a framework, try searching Google Groups and asking on IRC for places where code is indexed for your specific language/development stack. I find pestering the framework/language core developers is an easy way to find out the information I need, and they are usually happy to answer questions as long as I document and answer those questions for others later (blogging, updating documentation, etc.).