argent-smith

bundler

Bundler manages an application's dependencies through its entire life, across many machines, systematically and repeatably

fakeweb

FakeWeb is a helper for faking web requests in Ruby. It works at a global level, without modifying code or writing extensive stubs.

pry

An IRB alternative and runtime developer console

rake

Rake is a Make-like program implemented in Ruby. Tasks and dependencies are specified in standard Ruby syntax. Rake has the following features: * Rakefiles (rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax to worry about (is that a tab or a space?) * Users can specify tasks with prerequisites. * Rake supports rule patterns to synthesize implicit tasks. * Flexible FileLists that act like arrays but know about manipulating file names and paths. * Supports parallel execution of tasks.

rdoc

RDoc produces HTML and command-line documentation for Ruby projects. RDoc includes the +rdoc+ and +ri+ tools for generating and displaying documentation from the command-line.

rspec

BDD for Ruby

simplecov

Code coverage for Ruby 1.9+ with a powerful configuration library and automatic merging of coverage across test suites