Stickler is a tool to organize and maintain an internal gem repository. Primarily, you would want to use Stickler if: 1. You have proprietary gems that you want to have available via a gem server so you may +gem install+ them. 2. You would like to have a local mirror of third party gems from either http://rubygems.org or some other gem server. 3. You want both (1) and (2) in the same server.