Rails Lens provides unified visualization and annotation for Rails 7.2+ applications, integrating ERD generation and model annotations.

Pattern matching for Rails applications

Patching rails include/select/virtual attributes issue ( https://github.com/rails/rails/issues/15185 )

Make rails and bootstrap sing with awesome helpers, additional components, and more.

Converts strong e-tags to weak so they can be passed through nginx with g-zip compression enabled

A Ruby template language inspired by JSX

Return struct results from ActiveRecord relation queries

Provides a relational feature to your Rails application.

Model serialization, paging, side-loading and filtering

Fast, modern and concurrent bulk import for ruby on rails.

Robokassa is payment system, that provides a single simple interface for payment systems popular in Russia. If you have customers in Russia you can use the gem. The first thing about this gem, is that it was oribinally designed for spree commerce. So keep it in mind.

When you write a web API, you make a promise to the world. RSpec API helps you keep your promise.

Provide a language server implementation for ruby in ruby. See https://microsoft.github.io/language-server-protocol/ "A Language Server is meant to provide the language-specific smarts and communicate with development tools over a protocol that enables inter-process communication."

Rules engine that allows you to add customizable business rules to any ActiveRecord model.

Ryakuzu - Interface for your schema.rb

SafeFinder lets you define model's null_object through simple DSL, and returns it when you can't find a result.

ActiveRecord extension & rails engine for syncing data with Salesforce.com

DCI (data, context and interaction) for Ruby / Rails / ActiveRecord

SCIM Adapter for Rails.

Plugin adds authentication methods to Sequel models using BCrypt library.