This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# ThreadGroup.list (from ruby core) --- thgrp.list -> array --- Returns an array of all existing Thread objects that belong to this group. ThreadGroup::Default.list #=> [#<Thread:0x401bdf4c run>]
This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.