Browse free open source Ruby Frameworks and projects below. Use the toggles on the left to filter open source Ruby Frameworks by OS, license, language, programming language, and project status.

  • Zenflow- The AI Workflow Engine for Software Devs Icon
    Zenflow- The AI Workflow Engine for Software Devs

    Parallel agents. Multi-agent orchestration. Specs that turn into shipped code. Zenflow automates planning, coding, testing, and verification.

    Zenflow is the AI workflow engine built for real teams. Parallel agents plan, code, test, and verify in one workflow. With spec-driven development and deep context, Zenflow turns requirements into production-ready output so teams ship faster and stay in flow.
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • 1
    Metasploit Framework

    Metasploit Framework

    Metasploit Framework

    Metasploit Framework is a comprehensive penetration-testing and exploit development platform that streamlines the process of discovering, validating, and demonstrating vulnerabilities. It provides a modular architecture—payloads, encoders, exploits, auxiliaries, and post-exploitation modules—so security professionals can piece together complex attack chains or test defensive controls in realistic ways. Built-in features include an exploit database, network scanners, credential harvesters, and frameworks to craft reliable payload delivery while handling target nuances like mitigation bypasses and platform differences. Beyond raw exploitation, the framework includes post-exploitation tooling for lateral movement, persistence, data exfiltration simulations, and evidence collection, enabling red teams to exercise detection and incident response workflows.
    Downloads: 15 This Week
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  • 2
    RubyGems

    RubyGems

    Library packaging and distribution for Ruby

    RubyGems is a package management framework for Ruby. A package (also known as a library) contains a set of functionality that can be invoked by a Ruby program, such as reading and parsing an XML file. We call these packages "gems" and RubyGems is a tool to install, create, manage and load these packages in your Ruby environment. RubyGems is also a client for RubyGems.org, a public repository of Gems that allows you to publish a Gem that can be shared and used by other developers. See our guide on publishing a Gem.
    Downloads: 8 This Week
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  • 3
    Development of this library has been moved to https://github.com/kordamp/json-lib/ Json-lib is a java library for transforming beans, maps, collections, java arrays and XML to JSON and back again to beans and DynaBeans. It is based on the work by Douglas Crockford in http://www.json.org/java.
    Downloads: 41 This Week
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  • 4
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 27 This Week
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 5
    SIGAR (System Information Gatherer and Reporter) is a cross-platform, cross-language library and command-line tool for accessing operating system and hardware level information in Java, Perl and .NET.
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    Downloads: 28 This Week
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  • 6
    Active Admin

    Active Admin

    The administration framework for Ruby on Rails applications

    Active Admin is a Ruby on Rails plugin for generating administration style interfaces. It abstracts common business application patterns to make it simple for developers to implement beautiful and elegant interfaces with very little effort. Customizable global navigation allows you to create usable admin interfaces for your business. Use the bundled Devise configuration or implement your own authorization using the provided hooks. Use scopes to create sections of mutually exclusive resources for quick navigation and reporting. Add buttons, links or other content in the “Action Items” section on each screen. Index screens are available in many styles. The default, shown here, is a table view, but Active Admin also supports Grids, Blocks and a Blog view. Allow users to filter resources by searching strings, text fields, dates, and numeric values. Customize the sidebar sections with a simple DSL built in to Active Admin.
    Downloads: 1 This Week
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  • 7
    Compass

    Compass

    Stylesheet authoring framework

    Compass is a stylesheet authoring framework built on top of Sass that provides a rich set of mixins, functions, and helpers for writing maintainable CSS. It offers abstractions for vendor prefixes, cross-browser compatibility fixes, and reusable UI patterns like grids, buttons, and typography helpers. With Compass, developers can write cleaner Sass code that compiles into consistent CSS across browsers without hand-coding workarounds. The framework also includes a command-line tool for compiling Sass, managing sprite sheets, and integrating with build workflows. It was widely adopted in the era before modern CSS standards caught up with mixins and variables, helping developers speed up styling while reducing redundancy. While less dominant today, Compass remains an important historical tool that influenced the evolution of Sass and frontend best practices.
    Downloads: 1 This Week
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  • 8
    Mongoid

    Mongoid

    Ruby ODM framework for MongoDB

    Mongoid is the officially supported ODM (Object-Document-Mapper) framework for MongoDB in Ruby. This Mongoid community organization is a group of open-source contributors around the Mongoid ODM not affiliated with the company, MongoDB. Mongoid is customarily configured through a mongoid.yml file that specifies options and clients. The simplest configuration is as follows, which configures Mongoid to talk to a MongoDB server at “localhost:27017” and use the database named “mongoid”. If you are not using Ruby on Rails, Mongoid configuration must be loaded manually. This can be done via the Mongoid.load! method, which takes the configuration file path as its argument. It is also possible to configure Mongoid directly in Ruby, without using a configuration file. This configuration style does not support the concept of environments - whatever configuration is provided, it is applied to the current environment, but it does support defining multiple clients.
    Downloads: 1 This Week
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  • 9

    FORTRAN Unit Test Framework (FRUIT)

    FORTRAN Unit Test Framework FRUIT - TDD in FORTRAN

    FORTRAN Unit Test Framework, written in FORTRAN 95. So that all FORTRAN features can be tested. FRUIT has assertion, fixture, setup, teardown, report, spec, driver generation. Rake used as build tool. Tutorials at http://fortranxunit.wiki.sourceforge.net The core testing part is in FORTRAN, this part can be used independent of the Ruby codes. The Ruby code is to make fixtures and reports easier. Rake is to build the project elegantly. This project also demonstrate a new way to build mixed language code in an alternative way than Make. Most of the FORTRAN are important in nature, used in nuclear and aerospace codes, etc, and maintained and written actively. Please help to bring TDD practices to the FORTRAN community. The change could be very hard, personally, I quit, since I could not make the change. I hope your organization will be successful. Enjoy a cup of fruit while maintaining FORTRAN ! Andrew Hang Chen and other maintainers who feel importance of TDD in cr
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    Downloads: 6 This Week
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  • BoldTrail Real Estate CRM Icon
    BoldTrail Real Estate CRM

    A first-of-its-kind homeownership solution that puts YOU at the center of the coveted lifetime consumer relationship.

    BoldTrail, the #1 rated real estate platform, is built to power your entire brokerage with next-generation technology your agents will use and love. Showcase your unique brand with customizable websites for your company, offices, and every agent. Maximize lead capture with a modern, portal-like consumer search experience and intelligent behavior tracking. Hyper-local area pages, home valuation pages and options for rich lifestyle data keep customers searching with your brokerage as the local experts. The most robust lead gen tools on the market help your brokerage, teams & agents effectively drive new business - no matter their budget. Empower your agents to generate free leads instantly with our simple to use landing pages & IDX squeeze pages. Drive more leads with higher quality and lower cost through in-house tools built within the platform. Diversify lead sources with our automated social media posting, integrated Google and Facebook advertising, custom text codes and more.
    Learn More
  • 10
    An Excel addin and server framework for implementing remote excel user-defined functions (UDFs). This framework is designed to provide a centralised warehouse of functions for Excel users (eg. within an organisation).
    Downloads: 1 This Week
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  • 11
    Laika analyzes and reports on the interoperability capabilities of EHR systems. This includes the testing for certification of EHR software products and networks.
    Downloads: 1 This Week
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  • 12
    A drop-in framework for adding tagging (folksonomy) capabilities to existing applications
    Downloads: 0 This Week
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  • 13
    Arachni

    Arachni

    Web Application Security Scanner Framework

    Arachni is an Open Source, feature-full, modular, high-performance Ruby framework aimed towards helping penetration testers and administrators evaluate the security of web applications.
    Downloads: 0 This Week
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  • 14
    Avo Framework

    Avo Framework

    Build Ruby on Rails apps 10x faster

    Avo is a very custom Admin Panel Framework, Content Management System, and Internal Tool Builder for Ruby on Rails that saves engineers and teams months of development time.
    Downloads: 0 This Week
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  • 15
    3D render engine cross platform written from scratch using c++11 standard features. With the approach to create a high scalable, flexible 3D engine with full modding support. Using flexible configs to include common technologies without the lack of massive extension coding
    Downloads: 0 This Week
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  • 16
    Blueprint CSS

    Blueprint CSS

    A CSS framework that aims to cut down on your CSS development time

    Blueprint CSS is a CSS framework aimed at accelerating layout and typographic design by providing robust base styles, grid systems, and reusable UI components. It combines normalized defaults with helpful utilities—such as column layouts, form styling, and typography helpers—so developers can build responsive sites with less repetitive CSS. Because it’s designed as a structural foundation rather than a themed UI kit, it’s easy to layer branding and custom design on top without fighting the base styles. The framework includes mixins, modifier classes, and responsive breakpoints so layouts adapt fluidly across screen sizes. By starting with a consistent baseline, Blueprint CSS reduces cross-browser quirks and gives designers confidence in spacing, proportion, and element alignment. Teams often use it as the “CSS backbone” of internal tools, web products, or component libraries.
    Downloads: 0 This Week
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  • 17
    Breeze is a build and test automation framework for software developers. It is written in Ruby and can be extended to include tasks that interact with other tools such as source code repositories, compilers, test frameworks, and installers.
    Downloads: 0 This Week
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  • 18
    Bricklayer is a Ruby web application framework that uses a component architecture very loosely based on that of perl's HTML::Mason. To see the proof of concept for Bricklayer, check out the Liber RDF Portal project.
    Downloads: 0 This Week
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  • 19
    CZEBOX is a referral Open Source implementation of ISDS DataBoxes (http://datoveschranky.info/), eGovernment messaging system founded by Ministry of Interior Czech Republic and Czech Post.
    Downloads: 0 This Week
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  • 20
    Capistrano

    Capistrano

    Remote multi-server automation tool

    A remote server automation and deployment tool written in Ruby. Capistrano extends the Rake DSL with methods specific to running commands on() servers. Capistrano is written in Ruby, but it can easily be used to deploy any language. If your language or framework has special deployment requirements, Capistrano can easily be extended to support them. Capistrano is bundled as a Ruby Gem. It requires Ruby 2.0 or newer. Capistrano can be installed as a standalone Gem, or bundled into your application. It is recommended to fix the version number when using Capistrano, and is therefore recommended to use an appropriate bundler. The capistrano-rails gem includes extras specifically designed for Ruby on Rails, specifically Asset Pipeline Support and Database Migration Support. Capistrano deploys using SSH. Thus, you must be able to SSH (ideally with keys and ssh-agent) from the deployment system to the destination system for Capistrano to work.
    Downloads: 0 This Week
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  • 21
    Capybara

    Capybara

    Acceptance test framework for web applications

    Capybara is a Ruby acceptance testing framework that simulates how a real user would interact with a web application. It allows developers to write tests that drive browsers, checking for expected content, links, buttons, and form interactions. Capybara integrates with drivers like Selenium, Rack::Test, and headless browsers such as Cuprite or WebKit, letting tests run in real browsers or lightweight simulation environments. Its DSL emphasizes natural language-like syntax, such as visit, click_button, and fill_in, which makes tests readable and expressive. Capybara also handles asynchronous JavaScript and dynamic content, waiting for elements to appear or actions to complete before assertions run. By bridging test suites with actual browser behavior, Capybara helps ensure that web apps behave correctly from a user’s perspective.
    Downloads: 0 This Week
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  • 22
    A set of tools and utilities that allow development teams to practice code generation techniques in a scalable and extensible manner. This is based on the style of code generation found in Ruby on Rails.
    Downloads: 0 This Week
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  • 23
    A simple rails app to run a code dojo via web browsers. Now moved to http://github.com/JonJagger/cyberdojo
    Downloads: 0 This Week
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  • 24
    DuckRails

    DuckRails

    Development tool to mock API endpoints quickly

    DuckRails is a development tool. Its main purpose is to allow developers to quickly mock API endpoints that for many possible reasons they can't reach at a specific time. The application allows creating new routes dynamically to which developers can assign static or dynamic responses. DuckRails is an open source development tool built using the Ruby on Rails framework. The purpose of the tool is to allow developers to easily mock API endpoints outside their applications. Knowing ruby is not required. It would just help you define ruby dynamic mocks easier (embedded ruby). No worries, you can still define dynamic responses by selecting Javascript as the mock’s body type. Instead of defining a mock to always respond with some static content, you can also configure it to dynamically resolve the content to serve. For example, you can access the original request’s parameters and headers and decide how you could respond.
    Downloads: 0 This Week
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  • 25
    EasyRails is a Windows installation package for Ruby and Ruby on Rails. Its goal is to provide a fully package that installs and configures everything you need to begin your development.
    Downloads: 0 This Week
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