has just one dependency which points to the actual gem. this gem gets refered by ParseTree-3.0.0

A Gem to Rewrite Ruby code from a special syntax into an evented IO form.

Code smell detector for Ruby

Simple Ruby interpreter

gem install universe-parsing

A programatic FSM library that makes specifications executable and verifiable.

Replace keyword implementations with your own functions, for DSLs

Xiki does what shell consoles do, but lets you edit everything at any time. It's trivial to make your own commands and menus to access other tools.