The IRB tools make using IRB more productive since 2010.

They just hit 2.0 and here are some of the improvements:

• Under the hood: New Wirb 2.0 and FancyIrb 1.0
• Better support for viewing a method’s source
• Code complexity decreased and no more support for Ruby under 2.0
• Comes with the instance gem, which makes manipulating instance variables a lot easier

Just like PRY, you can start IRB (including Irbtools) directly from your code via the current binding: binding.irb