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.

  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
    Start Free
  • Host LLMs in Production With On-Demand GPUs Icon
    Host LLMs in Production With On-Demand GPUs

    NVIDIA L4 GPUs. 5-second cold starts. Scale to zero when idle.

    Deploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
    Start Free
  • 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: 26 This Week
    Last Update:
    See Project
  • 2
    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.
    Downloads: 29 This Week
    Last Update:
    See Project
  • 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: 19 This Week
    Last Update:
    See Project
  • 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: 11 This Week
    Last Update:
    See Project
  • 99.99% Uptime for MySQL and PostgreSQL Databases Icon
    99.99% Uptime for MySQL and PostgreSQL Databases

    Sub-second maintenance. 2x read/write performance. Built-in vector search for AI apps.

    Cloud SQL Enterprise Plus delivers near-zero downtime with 35 days of point-in-time recovery. Supports MySQL, PostgreSQL, and SQL Server.
    Start Free
  • 5
    Hanami

    Hanami

    A flexible framework for maintainable Ruby apps

    Hanami is a modern Ruby web framework that aims to be lightweight, fast, and modular, in contrast to the monolithic design of Rails. It emphasizes separation of concerns, encouraging developers to structure applications into clear layers of controllers, views, entities, and repositories. Each component—like the router, model layer, or view rendering engine—can be used independently, which gives developers flexibility to build lean applications. Hanami promotes immutability, plain old Ruby objects, and minimized global state, which makes codebases more maintainable and testable. It supports multi-application setups within the same project, making it well-suited for larger service-oriented architectures. The framework is designed to provide Rails-like productivity while encouraging more explicit architecture and performance-conscious choices.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    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: 1 This Week
    Last Update:
    See Project
  • 7
    bootstrap_form

    bootstrap_form

    Repository of the bootstrap_form gem

    Official repository of the bootstrap_form gem, a Rails form builder that makes it super easy to create beautiful-looking forms using Bootstrap 5. bootstrap_form is a Rails form builder that makes it super easy to integrate Bootstrap v5-style forms into your Rails application. It provides form helpers that augment the Rails form helpers. bootstrap_forms's form helpers generate the form field and its label and all the Bootstrap mark-up required for proper Bootstrap display. bootstrap_form. You can also put the error messages after the label, or turn off bootstrap_form's validation error handling and do it yourself. Note that this applies to Rails-generated validation messages. HTML 5 client-side validation and Rails validation out of the box doesn't really work well together. Mark-up for Bootstrap horizontal forms (labels to the left of their fields, like a traditional desktop application), if that's what you want.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8

    scriptHelper

    integration between Java and scripting languages

    scriptHelper is a Java library allowing a simple integration between Java code and various script languages. This library also allows to debug these scripts in the context of a Java program.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 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
    Leader badge
    Downloads: 1 This Week
    Last Update:
    See Project
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Start Free
  • 10
    HIPAATalk - Contains stored procedures and sample DTS packages for parsing and converting X12 to flat tables and creating HIPAA-compliant X12 files. Currently reads 820, 834, 835, 837P/I/D, 841, 997, TA1, and creates 835, 837P/I/D, 834, 277U, 997, TA1.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    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: 1 This Week
    Last Update:
    See Project
  • 12
    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
    Last Update:
    See Project
  • 13
    "MiniKidsGames" is a collention of small games for kids. It's fun to play and learn. Full-screen easy-to-play games will keep your kids on your Mac. Xcode projects/templates/tutorial are available so you can make your games quickly!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    THIS PROJECT IS DEAD. For the real appcelerator project, please visit http://www.appcelerator.com
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    A drop-in framework for adding tagging (folksonomy) capabilities to existing applications
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    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: 0 This Week
    Last Update:
    See Project
  • 17
    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
    Last Update:
    See Project
  • 18
    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
    Last Update:
    See Project
  • 19
    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
    Last Update:
    See Project
  • 20
    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
    Last Update:
    See Project
  • 21
    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
    Last Update:
    See Project
  • 22
    Brutos Framework

    Brutos Framework

    Brutos is an easy and powerful mvc controller.

    Brutos Framework is a software development framework designed to support the rapid creation of scalable, modular, and resilient backend systems. It emphasizes strict separation of concerns, event-driven architecture, and pluggable components, making it suitable for distributed applications, microservices ecosystems, and enterprise-grade platforms.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    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
    Last Update:
    See Project
  • 24
    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
    Last Update:
    See Project
  • 25
    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
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • Next