A package (also known as a library) contains a set of functionality that can be invoked by a Ruby program, such as reading and parsing an XML file. We call these packages 'gems' and RubyGems is a tool to install, create, manage and load these packages in your Ruby environment. RubyGems is also a client for RubyGems.org, a public repository of Gems that allows you to publish a Gem that can be shared and used by other developers. See our guide on publishing a Gem at guides.rubygems.org
Fast ruby package management for unix
Hacker's toolbelt for Ruby, gems, Bundler, git, and more
SlimGems is a drop-in replacement for RubyGems, a package management framework for Ruby. This project was forked at 1.3.7, which was a great stable release. SlimGems focuses on maintaining a sane and stable API. We believe that the project has been put through enough stress testing by the community to lock into the current API functionality for the forseeable future. We will also continue to improve the runtime performance over time; we can do this without changing the API.