What do I mean when I say? - System level package / Global package: Package installed so that it is available for every program on the system - Local package: Package installed into sub folder of project and only available to that project Timeline dpkg 1994 cpan, uploaded packages from 1995 jar 1996 debian release with apt 1999 perl package manager goes back to 1999 rubygems 2004 ruby bundler 2010, git history from 2010, ruby gem from 2009 npm 2010 nuget 2010 This is just a sampling [...]