Obtuse 
Obtuse is a stack-oriented programming language, optimized for brevity.
Installation
Using Git (recommended)
$ git clone https://github.com/utkarshkukreti/obtuse.git
$ cd obtuse
$ bundle install
$ rake install
Using RubyGems
$ gem install obtuse
Usage
Run
$ obtuse
to start the interactive REPL.
Documentation
Check out spec/obtuse_spec.rb for all functions and their outputs.
License
The MIT License.
Copyright (c) 2012, Utkarsh Kukreti.