ActiveDryDeps not modify constructor and support Dependency Injection for modules. Also you can import method from any object in your container. Adding extra dependencies is easy and improve readability your code.

Guice-ish dependency injection library for Ruby

A gem to handle dependency injection on ruby applications

Racket Registry is an easy-to-use container lib for most of your dependency injection container needs.

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

Plugin system for Rails built around a Dependency Injection Container

A simple dependency injection framework for ruby

Value containers supporting nested dot.notation access over hashes, and utilities offering dependency injection/lookup, and language extensions support running in a non-rails environment. Plus, examples of null objects, class customization, and concurrent processing. Review the RSpec tests, and or review the README for more details.

Periodico is a lightweight pub/sub framework that leverages self-registration and dependency injection to communicate events to subscribers.

A small library to help you manage services with dependency injection.

A thread-safe dependency injection container.

A custom generator for creating features as modules using the dry.rb gems. The module registers a dry system provider, adds routes, view and migrations paths to the application configuration and registers the models and services for dependency injection.

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

A small library for simplifying dependency injection.

Alki (AL-kai) is a Dependency Injection framework for Ruby. Helps organize and scale your project, so you can focus on the important stuff.

Lightweight Ruby Dependency Injection

A simple dependency injection library for Ruby.

A dependency injection framework for Ruby, which allows you to register dependencies and access them anywhere in your program

Configuration-based factory for dependency injection

An extension to Sinatra enabling dependency injection