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

Dumpling is an unobtrusive Dependency Injection Container

Minimal dependency injection container for Ruby

Simple and stupid IOC container and dependency injection tool for ruby

Dependency injection framework for ruby

A small library for simplifying dependency injection.

motion-objection is a wrapper around Objection which is a dependency injection framework written for Objective-C

Dependency Injection that won't make your head spin

Dependency configuration and injection for Ruby and Rails.

A lightweight dependency injection framework to help wire up objects in Ruby

Lightweight Ruby Dependency Injection

Basic but powerful dependency injection for Ruby.

A Sinatra wrapper for a fully customizable Dependency injection system

A Rails wrapper for a fully customizable Dependency injection system

A fully customizable Dependency injection system for Ruby

Encase is a library for using dependency injection within ruby applications. It provides a lightweight IOC Container that manages dependencies between your classes. It was written to assist with wiring of domain objects outside Rails applications to enable faster test suites.

Enable Guice-like dependency injection and contextual object interactions.

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.

Injection is a simple dependency injection gem for rails3. It allows you to inject objects into your controllers and observers which have been described in a yaml file (config/objects.yml).

Dependor is not a framework for Dependency Injection, but something thatt reduces duplication a little bit when doing manual dependency injection in settings like Rails apps.