Kaminari is a Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Rails 3

Description of Dingtalk.

Dependency Injection for Rails

This Gem allows Rails applications to store it's view templates in it's database.

command line utilities to manage catalogs of directory damn simple catalog based on tagging file name. The tag are between bracket. For example the filename 'photo [sea][2010][summer]', associate with the name photo the tag sea,2010,summer.

A simple way to direct upload big files to Amazon S3 storage from Ruby applications and process it with cloud encoding service.

Provides a concern for monitoring changes to has_many and has_many_and_belongs_to associations using ActiveModel::Dirty.

Tracks nested association changes in ActiveRecord objects. Marks all changes in parent if something in child (one to one, one to many) records has changed.

disallow certain features in ActiveRecord models such as `default_scope`, `callbacks`

Discerner is an engine for Rails that provides basic search UI, search reqults export UI and allows to configure available search parameters/values. Discerner is not aimed to be a SQL-generator, but it allows the host application to access stored search conditions and provide search results.

Redirects users to a disclaimer document until the user accepts the disclaimer.

A Rails engine to allow you to easily set up rules and events for when each user should receive notifications - great for adding configurable notifications.

A simple privacy/authorization framework for Rails projects.

A Ruby gem that implements single-table inheritance (STI) for ActiveRecord models using string, integer and boolean column types.

A gem to manage a thread discussion with ajax support.

Dismiss HTML blocks and save state in the database. Engine for Ruby on Rails.

A utility that makes it easy to create "on-the-fly databases"

Filter rails logs by IPs.

DistributedRails enables the server to use the clients (browsers) to execute javascript tasks and return the results. Think SETI@home or folding@home

Adds a route helper and controller action to catch 404 pages. 404s are stored in the database where a redirect can be set up.