Ansible Powerplay, by way of its DSL, allows you to specify your Ansible playbooks and their vars, and common vars to all, so that you can run your indeoendent playbooks in full parallel.

The fxruby library is an excellent wrapper for the FOX toolkit. However, it reflects the C++-ness of FOX, rather than being more Ruby-like. As such, creating composed objects with it tends to be rather ugly and cumbersome. fxruby-enhancement is a wrapper for the wrapper, to "rubyfy" it and make it more easy to use for Rubyists. fxruby-enhancement is basically a DSL of sorts, and every effort has been taken to make it intuitive to use. Once you get the hang of it, you should be able to look at the FXRuby API documentation and infer the DSL construct for fxruby-enhancement.

attr_pow gives you smart attributes. You may sepecify defaults, use attr_pow for hooks, and even define clonability and queuability.

RubyNEAT -- Neural Evolution of Augmenting Topologies for Ruby. By way of an enhanced form of Genetic Algorithms -- the NEAT algorithm, populations of neural nets are evolved to handle pre-defined goals. RubyNEAT is the first implementation of the NEAT algorithm for Ruby, and it leverages Ruby's power to implement the NEAT algorithm in a way that would be difficult to do in other languages. The 'activation function' is largely standalone. Basically, activation is achieved by functional programming. Meaning, once your network is evolved, you can extract it as source code you can then utilize without the RubyNEAT engine. RubyNEAT can be used for nearly any Machine Learning task you can dream of, because it's also extensible and modular. See http://rubyneat.com for the details.

A web-based Dashboard for your RubyNEAT development, http://localhost:3912