Ruby on Rails source code for Gumroad, an e-commerce platform that lets creators sell products directly to consumers.
API Documentation Browser
The official Ruby SDK for the Model Context Protocol servers and clients.
A Ruby static code analyzer and formatter, based on the community Ruby style guide.
Soulful docs for Swift & Objective-C
Track changes to your rails models
Mirror of redmine code source - Official Subversion repository is at https://svn.redmine.org/redmine - contact: @vividtone or maeda (at) farend (dot) jp
Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.
π« Stop saying "you forgot to β¦" in code review (in Ruby)
Integration of React + Webpack + Rails including server-side rendering of React, enabling a better developer experience and faster client performance.
Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites
The Ruby AI framework.
Code smell detector for Ruby
A Ruby code quality reporter
A pure Ruby code highlighter that is compatible with Pygments
A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.
Ruby production code coverage collection and reporting (line of code usage)
Bash command line framework and CLI generator
The Organization for Transformative Works (OTW) - Archive Of Our Own (AO3) Project
Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?
Manage translation and localization with static analysis, for Ruby i18n
An opinionated language server for Ruby
Easily and efficiently make your ActiveRecord models support hierarchies
Test Kitchen is an integration tool for developing and testing infrastructure code and software on isolated target platforms
like strace, but for ruby code
Date and time validation plugin for ActiveModel and Rails. Supports multiple ORMs and allows custom date/time formats.
Modern encryption for Ruby and Rails
Generate test coverage reports for Xcode projects & hook it into CI.
Discover the best way to get started contributing to Open Source projects
Identify app models with a URI
The tool to avoid various issues due to inconsistencies and inefficiencies between a database schema and application models.
Use ESM with importmap to manage modern JavaScript in Rails without transpiling or bundling.
Configuration management tool inspired by Chef, but simpler and lightweight. Formerly known as Lightchef.
An acts_as_sortable/acts_as_list replacement built for Rails 4+
A RuboCop extension focused on enforcing Rails best practices and coding conventions.
Code style checking for RSpec files.
The Ruby barcode generator
undercover warns about methods, classes and blocks that were changed without tests, to help you easily find untested code and reduce the number of bugs. It does so by analysing data from git diffs, code structure and SimpleCov coverage reports
An experimental type-level Ruby interpreter for testing and understanding Ruby code
A ruby gem to allow the copying of ActiveRecord objects and their associated children, configurable with a DSL on the model
Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).
AI model safety scanner built on NVIDIA garak
Code style checking for GitHub's Ruby projects
:traffic_light: Traffic control for code.
A Ruby Gem that adds annotations to your Rails models and route files.
Edit Video with Claude Code
A StatsD client for Ruby apps. Provides metaprogramming methods to inject StatsD instrumentation into your code.
Nice code coverage reporting without hassle
A Ruby gem implementation of a Model Context Protocol (MCP) server for Rails projects. This server allows LLMs (Large Language Models) to interact with Rails projects through the Model Context Protocol.
The codebase for Exercism's website.
A SkunkScore Calculator for Ruby Code -- Find the most complicated code without test coverage!
βEliminate deprecations from your codebase β
An independent community-maintained project based on the open-source "e621" codebase.
Evals and benchmarks for AI models
Ruby client for decision models such as Typesafe Jev
The contraction gate for Rails: no PR merges while the codebase holds duplication the Contract doesn't keep
Fix race conditions on one record in Rails: ordered operations, expiring holds, and durable state in your existing SQL database. A SQL-backed virtual actor library.
Ruby-native, model-agnostic agent harness where everything is a plugin
Aixle Flow β orchestrate coding agents through durable, inspectable workflows.
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