Spree Models, Helpers, Services and core libraries

The administration framework for Ruby on Rails.

Essential models, mailers, and classes for the Solidus e-commerce project.

Adds core features so other engines can hook into the framework.

CommunityEngine is a free, open-source social network platform for Ruby on Rails applications. Drop it into your new or existing application, and you’ll instantly have all the features of a basic community site.

Alchemy is a powerful, userfriendly and flexible Rails CMS.

Quick way to inspect your Rails database, see content of tables, filter, export them to CSV, Excel, EXPLAIN SQL and run SQL queries.

An expressive query DSL for Active Record 6+

JSON:API serialization, error handling, filtering and pagination.

uffizzi_core

A full-featured, mountable analytics dashboard for your Rails app, powered by Ahoy.

Add relational OLAP-like functionality for ActiveRecord

Code generator of admin views and controllers for ActiveRecord models.

TrustyCms is a simple and powerful publishing system designed for small teams. It is built with Rails and is similar to Textpattern or MovableType, but is a general purpose content management system--not merely a blogging engine.

A plugin for Administrate to use Ransack for search filters

Simple and real-life tested Rails::Engine admin interface

A Rails admin interface generator. Theme stolen from Redmine. Similar to web-app-theme but better ;).

Brightcontent core

This gem using to  integrate hierapolis theme  on rails project.

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own