Kuhsaft is a Rails engine that offers a simple CMS.

Lalala: Probably the best CMS in the world

Implements common components and features for Rails-based LCMS systems

Flexible toolkit to localize routes in rails.

ManageIQ Postgres H.A. Admin

Quick and easy mapping with MapPLZ

Marty is a framework for viewing and reporting on versioned data.

Models and logic for the RAD family of products.

This gem aims to provide an easy and faster way to do single database insertions in Rails.

Requires an evented Ruby dispatcher, like Thin

DB-Configurable type description. Uses hstore on the models. A demo app is running at http://meta-types.herokuapp.com

Rails tagging system based on PostgreSQL arrays

Metova libraries for Ruby on Rails

Annotate a Sequel Model with its expected schema and immediately identify inconsistencies.

Convert MongoDB query to Arel for PostgreSQL + JSON

Add table-level database locking to ActiveRecord

Mumuki Platform's Domain Model

Where students practice and receive automated and human feedback.

Postgresql constraints in migrations similiar to ActiveRecord validations

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