Gemified in 2.3

The following libraries were made standard gems with Ruby 2.3:

Default Gems

Gem Description Resources
json c Support for JSON (JavaScript Object Notation) RubyGems, GitHub, MRI, RDoc

Bundled Gems

Gem Description Resources
did_you_mean Patches error messages to suggest correct spelling of methods/classes/variables RubyGems, GitHub
net-telnet Support for Telnet RubyGems, GitHub
rake A Ruby task runner, inspired by make RubyGems, GitHub

More Standard Gems

Fork me on GitHub