Often times you'll end up with empty strings where you really want nil at the database level. This plugin automatically converts blanks to nil and is configurable.

Easy model creation and reference in your cucumber features

Rails performance tests (removed from core in Rails 4.0)

Supplies TimeOfDay and Shift class that includes parsing, strftime, comparison, and arithmetic.

Deprecated finder APIs extracted from Active Record.

The EmailAddress Gem to work with and validate email addresses.

Drag&Drop GUI for awesom_nested_set. Render Tree Helper. Very fast! Ready for Rails 4

Drag&Drop GUI helper for awesome_nested_set gem. Sortable tree view helper

This gem can be useful, if you need to upload files to your API from mobile devises.

Ruby on Rails data listing gem with built-in sorting, filtering and in-place editing.

Simple OAuth 2.0 provider toolkit

Make it easy to upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates merge functions for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.

Wiselinks makes following links and submitting some forms in your web application smarter and faster

Code Obscure Tool.You can use it simplely

Use the GraphiQL IDE for GraphQL with Ruby on Rails. This gem includes an engine, a controller and a view for integrating GraphiQL with your app.

Operational controls for Active Job

A lightweight CMS toolkit for Ruby on Rails, based on Bootstrap.

Flutie is a starting point for personal discovery

This gem allows you to easily use [Hashids](http://hashids.org/ruby/) in your Rails app. Instead of your models using sequential numbers like 1, 2, 3, they will instead have unique short hashes like "yLA6m0oM", "5bAyD0LO", and "wz3MZ49l". The database will still use integers under the hood, so this gem can be added or removed at any time.

Rails observer (removed from core in Rails 4.0)