Make your ActiveRecord IDs non-obvious

Extensions to Core Ruby classes

A mixin to provide objects with magic attribute reading and writing

A simple configuration class

A mixin for querying the platform running Ruby

A mixin for issuing shell commands and collecting the output

Alive Monitoring of Application Server and DB Server.

An address picker for Rails with autocompletion and map picking (adapted from https://github.com/sgruhier/jquery-addresspicker)

The easiest way to create bookmarklets in your rails app.

A Rails plugin that contains helpers for Bootstrap

Controls blink(1)

An action based auditor, which has internal as well as outgoing link tracking. Provides Analytics for User count in line-chart.

Moderated fields or whole model instances are serialized and saved into a separate moderations table. The moderation can then be accepted and the changes will be applied to the model. This way, lookups for existing, accepted fields or entries will be much faster than if using something like Papertrail, since the changes that have not yet been accepted are stored outside of the model table - in the moderations table.

Why make the browser load images that the user isn't going to see? This Rails engine prevents images from loading until they're actually going to be displayed. This saves bandwidth, reduces server load, and helps the user stay under their data quota.

Converts ActiveAdmin into a simple CMS

A replacement for ActiveResource for RESTful APIs that handles associated object and multiple data sources

Dead simple asset uploader attachments for your active record models

Produce Bootstrap html with semantic helper methods.

Double entry accounting for Rails applications

Add easyXDM to your app.