Copland is an "Inversion of Control" (IoC, also called "Dependency Injection") container for Ruby, based heavily on the HiveMind container for Java. It supports both type-2 (setter) and type-3 (constructor) injection.

Oktest.rb is a new-style testing library for Ruby. * `ok {actual} == expected` style assertion. * **Fixture injection** inspired by dependency injection. * Structured test specifications like RSpec. * Filtering testcases by pattern or tags. * Blue/red color instead of green/red for accesability....

Simple Dependency Injection for Ruby. Find yourself passing dependencies in to the initalizer? Medicine makes this declarative.

Dependency Injection that won't make your head spin

Plugin system for Rails built around a Dependency Injection Container

Simple dependency injection framework for ruby applications

Nurse, for your dependency injection. Dependency injection container

ObjectInjection is dependency injection container.

StructureMap is a Dependency Injection / Inversion of Control tool for .Net that can be used to improve the architectural qualities of an object oriented system by reducing the mechanical costs of good design techniques

An extension to Sinatra enabling dependency injection

Dinja, Dependency Injection Ninja allows you to decouple abstractions from implementations

A simple Dependency Injection container for Ruby.

A Sinatra wrapper for a fully customizable Dependency injection system

This is an easy tool to acomplish basic dependency injection in Ruby

A lightweight dependency injection container for Ruby

A simple dependency injection library for Ruby.

MinDI is minimalist in that it attempts to map concepts of dependency injection into basic ruby constructs, rather than into a layer of specialized constructs.

add dependency injection to dry-container

Koine DI, for your dependency injection. Dependency injection container

Dependency injection framework for ruby